(ROOT (S (PP (IN In) (NP (CD 1905))) (, ,) (PP (IN as) (NP (NP (NN part)) (PP (IN of) (NP (NP (PRP$ his) (NNP Special) (NNP Theory)) (PP (IN of) (NP (NNP Relativity))))))) (, ,) (NP (NNP Albert) (NNP Einstein)) (VP (VBD published) (NP (DT the) (NN point) (SBAR (IN that) (S (NP (NP (DT a) (JJ large) (NN amount)) (PP (IN of) (NP (NN energy)))) (VP (MD could) (VP (VB be) (VP (VBN released) (PP (IN from) (NP (NP (DT a) (JJ small) (NN amount)) (PP (IN of) (NP (NN matter)))))))))))) (. .)))
In 1905, as part of his Special Theory of Relativity, Albert Einstein published the point that a large amount of energy could be released from a small amount of matter.
case
in
In
ADP
IN
obl
NumForm=Digit|NumType=Card
1905
1905
NUM
CD
punct
,
,
PUNCT
,
case
as
as
ADP
IN
obl
Number=Sing
part
part
NOUN
NN
case
of
of
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
amod
Degree=Pos
Special
Special
ADJ
NNP
nmod
Number=Sing
Theory
Theory
PROPN
NNP
case
of
of
ADP
IN
nmod
Number=Sing
Relativity
Relativity
PROPN
NNP
punct
,
,
PUNCT
,
nsubj
Number=Sing
Albert
Albert
PROPN
NNP
flat
Number=Sing
Einstein
Einstein
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
publish
published
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
point
point
NOUN
NN
mark
that
that
SCONJ
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
large
large
ADJ
JJ
nsubj:pass
Number=Sing
amount
amount
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
energy
energy
NOUN
NN
aux
VerbForm=Fin
could
could
AUX
MD
aux:pass
VerbForm=Inf
be
be
AUX
VB
acl
Tense=Past|VerbForm=Part|Voice=Pass
release
released
VERB
VBN
case
from
from
ADP
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
amod
Degree=Pos
small
small
ADJ
JJ
obl
Number=Sing
amount
amount
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
matter
matter
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (DT This)) (VP (VBD was) (VP (VBN expressed) (PP (IN by) (NP (NP (DT the) (NN equation)) (NP (NNP E) (SYM =) (NNP mc2)))))) (. .)))
This was expressed by the equation E = mc2.
nsubj:pass
Number=Sing|PronType=Dem
this
This
PRON
DT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
root
Tense=Past|VerbForm=Part|Voice=Pass
express
expressed
VERB
VBN
case
by
by
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl:agent
Number=Sing
equation
equation
NOUN
NN
appos
Number=Sing
E
E
PROPN
NNP
parataxis
=
=
SYM
SYM
obj
Number=Sing
mc2
mc2
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (CC But) (NP (NNS bombs)) (VP (VBD were) (RB not) (SBAR (WHNP (WP what)) (S (NP (NNP Einstein)) (VP (VBD had) (PP (IN in) (NP (NN mind))) (SBAR (WHADVP (WRB when)) (S (NP (PRP he)) (VP (VBD published) (NP (DT this) (NN equation))))))))) (. .)))
But bombs were not what Einstein had in mind when he published this equation.
cc
but
But
CCONJ
CC
nsubj
Number=Plur
bomb
bombs
NOUN
NNS
cop
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
be
were
AUX
VBD
advmod
not
not
PART
RB
root
PronType=Rel
what
what
PRON
WP
nsubj
Number=Sing
Einstein
Einstein
PROPN
NNP
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
have
had
VERB
VBD
case
in
in
ADP
IN
obl
Number=Sing
mind
mind
NOUN
NN
advmod
PronType=Int
when
when
ADV
WRB
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
publish
published
VERB
VBD
det
Number=Sing|PronType=Dem
this
this
DET
DT
obj
Number=Sing
equation
equation
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (PP (IN In) (NP (CD 1929))) (, ,) (NP (PRP he)) (ADVP (RB publicly)) (VP (VBD declared) (SBAR (IN that) (S (SBAR (IN if) (S (NP (DT a) (NN war)) (VP (VBD broke) (PRT (RP out))))) (NP (PRP he)) (VP (MD would) (`` ``) (VP (VB refuse) (S (VP (TO to) (VP (VP (VB do) (NP (NN war) (NN service))) (, ,) (ADJP (JJ direct) (CC or) (JJ indirect)))))))))) (, ...) (. .) ('' '') (S (NP (PRP$ His) (NN position)) (VP (MD would) (VP (VB change) (PP (IN in) (NP (CD 1933))) (, ,) (PP (IN as) (NP (NP (DT the) (NN result)) (PP (IN of) (NP (NP (NNP Adolf) (NNP Hitler) (POS 's)) (VP (VBG coming) (PP (IN into) (NP (NN power))) (PP (IN in) (NP (NNP Germany))))))))))) (. .)))
In 1929, he publicly declared that if a war broke out he would "refuse to do war service, direct or indirect...." His position would change in 1933, as the result of Adolf Hitler's coming into power in Germany.
case
in
In
ADP
IN
obl
NumForm=Digit|NumType=Card
1929
1929
NUM
CD
punct
,
,
PUNCT
,
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
advmod
publicly
publicly
ADV
RB
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
declare
declared
VERB
VBD
mark
that
that
SCONJ
IN
mark
if
if
SCONJ
IN
det
Definite=Ind|PronType=Art
a
a
DET
DT
nsubj
Number=Sing
war
war
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
break
broke
VERB
VBD
compound:prt
out
out
ADP
RP
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
he
PRON
PRP
aux
VerbForm=Fin
would
would
AUX
MD
punct
``
``
PUNCT
``
ccomp
VerbForm=Inf
refuse
refuse
VERB
VB
mark
to
to
PART
TO
xcomp
VerbForm=Inf
do
do
VERB
VB
compound
Number=Sing
war
war
NOUN
NN
obj
Number=Sing
service
service
NOUN
NN
punct
,
,
PUNCT
,
amod
Degree=Pos
direct
direct
ADJ
JJ
cc
or
or
CCONJ
CC
conj
Degree=Pos
indirect
indirect
ADJ
JJ
punct
...
...
PUNCT
,
punct
.
.
PUNCT
.
punct
''
''
PUNCT
''
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
His
PRON
PRP$
nsubj
Number=Sing
position
position
NOUN
NN
aux
VerbForm=Fin
would
would
AUX
MD
parataxis
VerbForm=Inf
change
change
VERB
VB
case
in
in
ADP
IN
obl
NumForm=Digit|NumType=Card
1933
1933
NUM
CD
punct
,
,
PUNCT
,
case
as
as
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
result
result
NOUN
NN
case
of
of
ADP
IN
nmod:poss
Number=Sing
Adolf
Adolf
PROPN
NNP
flat
Number=Sing
Hitler
Hitler
PROPN
NNP
case
's
's
PART
POS
nmod
VerbForm=Ger
come
coming
VERB
VBG
case
into
into
ADP
IN
obl
Number=Sing
power
power
NOUN
NN
case
in
in
ADP
IN
obl
Number=Sing
Germany
Germany
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (NP (NP (NP (NNP Einstein) (POS 's)) (JJS greatest) (NN role)) (PP (IN in) (NP (NP (DT the) (NN invention)) (PP (IN of) (NP (DT the) (JJ atomic) (NN bomb)))))) (VP (VBD was) (VP (VBG signing) (NP (NP (NP (DT a) (NN letter)) (PP (IN to) (NP (NNP President) (NNP Franklin) (NNP Roosevelt)))) (VP (VBG urging) (SBAR (IN that) (S (NP (DT the) (NN bomb)) (VP (VB be) (VP (VBN built) (SBAR (IN because) (S (NP (DT some) (NNS physicists)) (VP (VBD feared) (SBAR (IN that) (S (NP (NNP Germany)) (VP (MD might) (VP (VB be) (VP (VBG working) (PP (IN on) (NP (DT an) (JJ atomic) (NN bomb))))))))))))))))))) (. .)))
Einstein's greatest role in the invention of the atomic bomb was signing a letter to President Franklin Roosevelt urging that the bomb be built because some physicists feared that Germany might be working on an atomic bomb.
nmod:poss
Number=Sing
Einstein
Einstein
PROPN
NNP
case
's
's
PART
POS
amod
Degree=Sup
great
greatest
ADJ
JJS
nsubj
Number=Sing
role
role
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
invention
invention
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
atomic
atomic
ADJ
JJ
nmod
Number=Sing
bomb
bomb
NOUN
NN
aux
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
root
Tense=Pres|VerbForm=Part
sign
signing
VERB
VBG
det
Definite=Ind|PronType=Art
a
a
DET
DT
obj
Number=Sing
letter
letter
NOUN
NN
case
to
to
ADP
IN
nmod
Number=Sing
President
President
PROPN
NNP
flat
Number=Sing
Franklin
Franklin
PROPN
NNP
flat
Number=Sing
Roosevelt
Roosevelt
PROPN
NNP
acl
VerbForm=Ger
urge
urging
VERB
VBG
mark
that
that
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj:pass
Number=Sing
bomb
bomb
NOUN
NN
aux:pass
VerbForm=Inf
be
be
AUX
VB
ccomp
Tense=Past|VerbForm=Part|Voice=Pass
build
built
VERB
VBN
mark
because
because
SCONJ
IN
det
some
some
DET
DT
nsubj
Number=Plur
physicist
physicists
NOUN
NNS
advcl
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
fear
feared
VERB
VBD
mark
that
that
SCONJ
IN
nsubj
Number=Sing
Germany
Germany
PROPN
NNP
aux
VerbForm=Fin
might
might
AUX
MD
aux
VerbForm=Inf
be
be
AUX
VB
ccomp
Tense=Pres|VerbForm=Part
work
working
VERB
VBG
case
on
on
ADP
IN
det
Definite=Ind|PronType=Art
a
an
DET
DT
amod
Degree=Pos
atomic
atomic
ADJ
JJ
obl
Number=Sing
bomb
bomb
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (SINV (PP (IN Among) (NP (NP (DT those)) (ADJP (JJ concerned)))) (VP (VBD were)) (NP (NNS physicists) (NML (NML (NNP Leo) (NNP Szilard)) (CC and) (NML (NNP Eugene) (NNP Wigner)))) (. .)))
Among those concerned were physicists Leo Szilard and Eugene Wigner.
case
among
Among
ADP
IN
root
Number=Plur|PronType=Dem
that
those
PRON
DT
amod
Degree=Pos
concerned
concerned
ADJ
JJ
cop
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
be
were
AUX
VBD
nsubj
Number=Plur
physicist
physicists
NOUN
NNS
flat
Number=Sing
Leo
Leo
PROPN
NNP
flat
Number=Sing
Szilard
Szilard
PROPN
NNP
cc
and
and
CCONJ
CC
conj
Number=Sing
Eugene
Eugene
PROPN
NNP
flat
Number=Sing
Wigner
Wigner
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (CC But) (NP (PRP they)) (VP (VBD had) (NP (NP (DT no) (NN influence)) (PP (IN with) (NP (NP (DT those)) (PP (IN in) (NP (NN power))))))) (. .)))
But they had no influence with those in power.
cc
but
But
CCONJ
CC
nsubj
Case=Nom|Number=Plur|Person=3|PronType=Prs
they
they
PRON
PRP
root
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
have
had
VERB
VBD
det
no
no
DET
DT
obj
Number=Sing
influence
influence
NOUN
NN
case
with
with
ADP
IN
nmod
Number=Plur|PronType=Dem
that
those
PRON
DT
case
in
in
ADP
IN
nmod
Number=Sing
power
power
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (RB So) (PP (IN in) (NP (NNP July) (CD 1939))) (NP (PRP they)) (VP (VBD explained) (NP (DT the) (NN problem)) (PP (IN to) (NP (NP (NN someone)) (SBAR (WHNP (WP who)) (S (VP (VBD did) (: :) (NP (NNP Albert) (NNP Einstein)))))))) (. .)))
So in July 1939 they explained the problem to someone who did: Albert Einstein.
advmod
so
So
ADV
RB
case
in
in
ADP
IN
obl
Number=Sing
July
July
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
1939
1939
NUM
CD
nsubj
Case=Nom|Number=Plur|Person=3|PronType=Prs
they
they
PRON
PRP
root
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
explain
explained
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
problem
problem
NOUN
NN
case
to
to
ADP
IN
obl
Number=Sing|PronType=Ind
someone
someone
PRON
NN
nsubj
PronType=Rel
who
who
PRON
WP
acl:relcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
do
did
VERB
VBD
punct
:
:
PUNCT
:
obj
Number=Sing
Albert
Albert
PROPN
NNP
flat
Number=Sing
Einstein
Einstein
PROPN
NNP
punct
.
.
PUNCT
.
(ROOT (S (PP (IN After) (S (VP (VBG talking) (PP (IN with) (NP (NNP Einstein)))))) (, ,) (PP (IN in) (NP (NNP August) (CD 1939))) (NP (NNP Szilard)) (VP (VBD wrote) (NP (NP (DT a) (NN letter)) (PP (IN to) (NP (NNP President) (NNP Roosevelt))) (PP (IN with) (NP (NP (NP (NP (NNP Einstein) (POS 's)) (NN signature)) (PP (IN on) (NP (PRP it)))) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBD was) (VP (VBN delivered) (PP (IN to) (NP (NNP Roosevelt))) (PP (IN in) (NP (NNP October) (CD 1939))))))))))) (. .)))
After talking with Einstein, in August 1939 Szilard wrote a letter to President Roosevelt with Einstein's signature on it, which was delivered to Roosevelt in October 1939.
mark
after
After
SCONJ
IN
advcl
VerbForm=Ger
talk
talking
VERB
VBG
case
with
with
ADP
IN
obl
Number=Sing
Einstein
Einstein
PROPN
NNP
punct
,
,
PUNCT
,
case
in
in
ADP
IN
obl
Number=Sing
August
August
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
1939
1939
NUM
CD
nsubj
Number=Sing
Szilard
Szilard
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
write
wrote
VERB
VBD
det
Definite=Ind|PronType=Art
a
a
DET
DT
obj
Number=Sing
letter
letter
NOUN
NN
case
to
to
ADP
IN
nmod
Number=Sing
President
President
PROPN
NNP
flat
Number=Sing
Roosevelt
Roosevelt
PROPN
NNP
case
with
with
ADP
IN
nmod:poss
Number=Sing
Einstein
Einstein
PROPN
NNP
case
's
's
PART
POS
obl
Number=Sing
signature
signature
NOUN
NN
case
on
on
ADP
IN
nmod
Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs
it
it
PRON
PRP
punct
,
,
PUNCT
,
nsubj:pass
PronType=Rel
which
which
PRON
WDT
aux:pass
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
acl:relcl
Tense=Past|VerbForm=Part|Voice=Pass
deliver
delivered
VERB
VBN
case
to
to
ADP
IN
obl
Number=Sing
Roosevelt
Roosevelt
PROPN
NNP
case
in
in
ADP
IN
obl
Number=Sing
October
October
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
1939
1939
NUM
CD
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (S (NP (NNP Germany)) (VP (VBD had) (VP (VBN invaded) (NP (NNP Poland)) (NP (DT the) (JJ previous) (NN month))))) (, ,) (S (NP (DT the) (NN time)) (VP (VBD was) (ADJP (JJ ripe) (PP (IN for) (NP (NN action)))))) (. .)))
Germany had invaded Poland the previous month, the time was ripe for action.
nsubj
Number=Sing
Germany
Germany
PROPN
NNP
aux
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
have
had
AUX
VBD
root
Tense=Past|VerbForm=Part
invade
invaded
VERB
VBN
obj
Number=Sing
Poland
Poland
PROPN
NNP
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
previous
previous
ADJ
JJ
obl:tmod
Number=Sing
month
month
NOUN
NN
punct
,
,
PUNCT
,
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
time
time
NOUN
NN
cop
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
AUX
VBD
parataxis
Degree=Pos
ripe
ripe
ADJ
JJ
case
for
for
ADP
IN
obl
Number=Sing
action
action
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (S (NP (NP (DT That) (NNP October) (NN research)) (PP (IN of) (NP (NN a-bomb)))) (VP (VP (VBD began)) (CC but) (VP (VBD proceeded) (ADVP (RB slowly))) (SBAR (IN because) (S (NP (NP (DT the) (NN invention)) (PP (IN of) (NP (DT the) (JJ atomic) (NN bomb)))) (VP (VBD seemed) (S (ADJP (JJ distant) (CC and) (JJ unlikely))))))) (. .)))
That October research of a-bomb began but proceeded slowly because the invention of the atomic bomb seemed distant and unlikely.
det
Number=Sing|PronType=Dem
that
That
DET
DT
compound
Number=Sing
October
October
PROPN
NNP
nsubj
Number=Sing
research
research
NOUN
NN
case
of
of
ADP
IN
nmod
Number=Sing
a-bomb
a-bomb
NOUN
NN
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
begin
began
VERB
VBD
cc
but
but
CCONJ
CC
conj
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
proceed
proceeded
VERB
VBD
advmod
slowly
slowly
ADV
RB
mark
because
because
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
invention
invention
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
atomic
atomic
ADJ
JJ
nmod
Number=Sing
bomb
bomb
NOUN
NN
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
seem
seemed
VERB
VBD
xcomp
Degree=Pos
distant
distant
ADJ
JJ
cc
and
and
CCONJ
CC
conj
Degree=Pos
unlikely
unlikely
ADJ
JJ
punct
.
.
PUNCT
.
(ROOT (S (PP (IN In) (NP (NNP April) (CD 1940))) (NP (NP (DT an) (NNP Einstein) (NN letter)) (, ,) (ADJP (VBN ghost-written) (PP (IN by) (NP (NNP Szilard)))) (, ,)) (VP (VBD pressed) (NP (DT the) (NNS researchers)) (PP (IN on) (NP (NP (DT the) (NN need)) (PP (IN for) (`` ``) (NP (JJR greater) (NN speed)))))) ('' '') (. .)))
In April 1940 an Einstein letter, ghost-written by Szilard, pressed the researchers on the need for "greater speed".
case
in
In
ADP
IN
obl
Number=Sing
April
April
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
1940
1940
NUM
CD
det
Definite=Ind|PronType=Art
a
an
DET
DT
compound
Number=Sing
Einstein
Einstein
PROPN
NNP
nsubj
Number=Sing
letter
letter
NOUN
NN
punct
,
,
PUNCT
,
acl
Tense=Past|VerbForm=Part
ghost-written
ghost-written
VERB
VBN
case
by
by
ADP
IN
obl
Number=Sing
Szilard
Szilard
PROPN
NNP
punct
,
,
PUNCT
,
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
press
pressed
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Plur
researcher
researchers
NOUN
NNS
case
on
on
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
obl
Number=Sing
need
need
NOUN
NN
case
for
for
ADP
IN
punct
``
``
PUNCT
``
amod
Degree=Cmp
great
greater
ADJ
JJR
nmod
Number=Sing
speed
speed
NOUN
NN
punct
''
''
PUNCT
''
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (SBAR (IN As) (S (NP (NP (DT the) (NN realization)) (PP (IN of) (NP (JJ nuclear) (NNS weapons)))) (VP (VBD grew) (ADVP (RB near))))) (, ,) (NP (NNP Einstein)) (VP (VBD looked) (PP (IN beyond) (NP (DT the) (JJ current) (NN war))) (PP (IN to) (NP (NP (JJ future) (NNS problems)) (SBAR (WHNP (WDT that)) (S (NP (JJ such) (NNS weapons)) (VP (MD could) (VP (VB bring)))))))) (. .)))
As the realization of nuclear weapons grew near, Einstein looked beyond the current war to future problems that such weapons could bring.
mark
as
As
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Sing
realization
realization
NOUN
NN
case
of
of
ADP
IN
amod
Degree=Pos
nuclear
nuclear
ADJ
JJ
nmod
Number=Plur
weapon
weapons
NOUN
NNS
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
grow
grew
VERB
VBD
advmod
near
near
ADV
RB
punct
,
,
PUNCT
,
nsubj
Number=Sing
Einstein
Einstein
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
look
looked
VERB
VBD
case
beyond
beyond
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
current
current
ADJ
JJ
obl
Number=Sing
war
war
NOUN
NN
case
to
to
ADP
IN
amod
Degree=Pos
future
future
ADJ
JJ
obl
Number=Plur
problem
problems
NOUN
NNS
obj
PronType=Rel
that
that
PRON
WDT
amod
Degree=Pos
such
such
ADJ
JJ
nsubj
Number=Plur
weapon
weapons
NOUN
NNS
aux
VerbForm=Fin
could
could
AUX
MD
acl:relcl
VerbForm=Inf
bring
bring
VERB
VB
punct
.
.
PUNCT
.
(ROOT (S (NP (PRP He)) (VP (VBD wrote) (PP (IN to) (NP (PRP$ his) (NN friend))) (PP (IN about) (NP (NP (PRP$ his) (NN fear)) (PP (IN about) (NP (NP (DT the) (JJ future) (NN use)) (PP (IN of) (NP (DT the) (NN a-bomb)))))))) (. .)))
He wrote to his friend about his fear about the future use of the a-bomb.
nsubj
Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs
he
He
PRON
PRP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
write
wrote
VERB
VBD
case
to
to
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl
Number=Sing
friend
friend
NOUN
NN
case
about
about
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl
Number=Sing
fear
fear
NOUN
NN
case
about
about
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
future
future
ADJ
JJ
nmod
Number=Sing
use
use
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
a-bomb
a-bomb
NOUN
NN
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (NP (NP (DT The) (JJ atomic) (NNS bombings)) (PP (IN of) (NP (NNP Japan)))) (VP (VBD occurred) (SBAR (NP (CD three) (NNS months)) (IN after) (S (NP (NNP Germany)) (VP (VBD gave) (PRT (RP in)))))) (. .)))
The atomic bombings of Japan occurred three months after Germany gave in.
det
Definite=Def|PronType=Art
the
The
DET
DT
amod
Degree=Pos
atomic
atomic
ADJ
JJ
nsubj
Number=Plur
bombing
bombings
NOUN
NNS
case
of
of
ADP
IN
nmod
Number=Sing
Japan
Japan
PROPN
NNP
root
Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin
occur
occurred
VERB
VBD
nummod
NumForm=Word|NumType=Card
three
three
NUM
CD
obl:npmod
Number=Plur
month
months
NOUN
NNS
mark
after
after
SCONJ
IN
nsubj
Number=Sing
Germany
Germany
PROPN
NNP
advcl
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
give
gave
VERB
VBD
compound:prt
in
in
ADP
RP
punct
.
.
PUNCT
.
(ROOT (NFP  ))
root
PUNCT
NFP
(ROOT (S (PP (IN In) (NP (NNP November) (CD 1954))) (, ,) (PP (NP (CD five) (NNS months)) (IN before) (NP (PRP$ his) (NN death))) (, ,) (NP (NNP Einstein)) (VP (VBD summarized) (NP (NP (PRP$ his) (NNS feelings)) (PP (IN about) (NP (NP (PRP$ his) (NN role)) (PP (IN in) (NP (NP (DT the) (NN creation)) (PP (IN of) (NP (DT the) (JJ atomic) (NN bomb)))))))) (: :) (`` ``) (S (S (NP (PRP I)) (VP (VBD made) (NP (CD one) (JJ great) (NN mistake)) (PP (IN in) (NP (PRP$ my) (NN life))) (, ...) (SBAR (WHADVP (WRB when)) (S (NP (PRP I)) (VP (VBD signed) (NP (NP (NP (DT the) (NN letter)) (PP (IN to) (NP (NNP President) (NNP Roosevelt)))) (VP (VBG recommending) (SBAR (IN that) (S (NP (NN atom) (NNS bombs)) (VP (VB be) (VP (VBN made)))))))))))) (: ;) (CC but) (S (NP (EX there)) (VP (VBD was) (NP (NP (DT some) (NN justification)) (, --) (NP (DT -the) (NN danger) (SBAR (IN that) (S (NP (DT the) (NNPS Germans)) (VP (MD would) (VP (VB make) (NP (PRP them)))))))))))) (. ?)))
In November 1954, five months before his death, Einstein summarized his feelings about his role in the creation of the atomic bomb: "I made one great mistake in my life...when I signed the letter to President Roosevelt recommending that atom bombs be made; but there was some justification---the danger that the Germans would make them?
case
in
In
ADP
IN
obl
Number=Sing
November
November
PROPN
NNP
nummod
NumForm=Digit|NumType=Card
1954
1954
NUM
CD
punct
,
,
PUNCT
,
nummod
NumForm=Word|NumType=Card
five
five
NUM
CD
nmod:npmod
Number=Plur
month
months
NOUN
NNS
case
before
before
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obl
Number=Sing
death
death
NOUN
NN
punct
,
,
PUNCT
,
nsubj
Number=Sing
Einstein
Einstein
PROPN
NNP
root
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
summarize
summarized
VERB
VBD
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
obj
Number=Plur
feeling
feelings
NOUN
NNS
case
about
about
ADP
IN
nmod:poss
Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs
his
his
PRON
PRP$
nmod
Number=Sing
role
role
NOUN
NN
case
in
in
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nmod
Number=Sing
creation
creation
NOUN
NN
case
of
of
ADP
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
amod
Degree=Pos
atomic
atomic
ADJ
JJ
nmod
Number=Sing
bomb
bomb
NOUN
NN
punct
:
:
PUNCT
:
punct
``
``
PUNCT
``
nsubj
Case=Nom|Number=Sing|Person=1|PronType=Prs
I
I
PRON
PRP
parataxis
Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin
make
made
VERB
VBD
nummod
NumForm=Word|NumType=Card
one
one
NUM
CD
amod
Degree=Pos
great
great
ADJ
JJ
obj
Number=Sing
mistake
mistake
NOUN
NN
case
in
in
ADP
IN
nmod:poss
Case=Gen|Number=Sing|Person=1|Poss=Yes|PronType=Prs
my
my
PRON
PRP$
obl
Number=Sing
life
life
NOUN
NN
punct
...
...
PUNCT
,
advmod
PronType=Int
when
when
ADV
WRB
nsubj
Case=Nom|Number=Sing|Person=1|PronType=Prs
I
I
PRON
PRP
advcl
Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin
sign
signed
VERB
VBD
det
Definite=Def|PronType=Art
the
the
DET
DT
obj
Number=Sing
letter
letter
NOUN
NN
case
to
to
ADP
IN
obl
Number=Sing
President
President
PROPN
NNP
flat
Number=Sing
Roosevelt
Roosevelt
PROPN
NNP
advcl
VerbForm=Ger
recommend
recommending
VERB
VBG
mark
that
that
SCONJ
IN
compound
Number=Sing
atom
atom
NOUN
NN
nsubj:pass
Number=Plur
bomb
bombs
NOUN
NNS
aux:pass
VerbForm=Inf
be
be
AUX
VB
ccomp
Tense=Past|VerbForm=Part|Voice=Pass
make
made
VERB
VBN
punct
;
;
PUNCT
:
cc
but
but
CCONJ
CC
expl
there
there
PRON
EX
conj
Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin
be
was
VERB
VBD
det
some
some
DET
DT
nsubj
Number=Sing
justification
justification
NOUN
NN
punct
--
--
PUNCT
,
det
Definite=Def|PronType=Art
-the
-the
DET
DT
appos
Number=Sing
danger
danger
NOUN
NN
mark
that
that
SCONJ
IN
det
Definite=Def|PronType=Art
the
the
DET
DT
nsubj
Number=Plur
German
Germans
PROPN
NNPS
aux
VerbForm=Fin
would
would
AUX
MD
acl
VerbForm=Inf
make
make
VERB
VB
obj
Case=Acc|Number=Plur|Person=3|PronType=Prs
they
them
PRON
PRP
punct
?
?
PUNCT
.
In 1905, as part of his Special Theory of Relativity, Albert Einstein published the point that a large amount of energy could be released from a small amount of matter. This was expressed by the equation E = mc2. But bombs were not what Einstein had in mind when he published this equation.  In 1929, he publicly declared that if a war broke out he would "refuse to do war service, direct or indirect...." His position would change in 1933, as the result of Adolf Hitler's coming into power in Germany.  Einstein's greatest role in the invention of the atomic bomb was signing a letter to President Franklin Roosevelt urging that the bomb be built because some physicists feared that Germany might be working on an atomic bomb. Among those concerned were physicists Leo Szilard and Eugene Wigner. But they had no influence with those in power. So in July 1939 they explained the problem to someone who did: Albert Einstein. After talking with Einstein, in August 1939 Szilard wrote a letter to President Roosevelt with Einstein's signature on it, which was delivered to Roosevelt in October 1939.  Germany had invaded Poland the previous month, the time was ripe for action. That October research of a-bomb began but proceeded slowly because the invention of the atomic bomb seemed distant and unlikely. In April 1940 an Einstein letter, ghost-written by Szilard, pressed the researchers on the need for "greater speed".  As the realization of nuclear weapons grew near, Einstein looked beyond the current war to future problems that such weapons could bring. He wrote to his friend about his fear about the future use of the a-bomb.  The atomic bombings of Japan occurred three months after Germany gave in.  In November 1954, five months before his death, Einstein summarized his feelings about his role in the creation of the atomic bomb: "I made one great mistake in my life...when I signed the letter to President Roosevelt recommending that atom bombs be made; but there was some justification---the danger that the Germans would make them?