species country of origin total released first release last release areas of release areas established pasture type
species
country of origin
total released
first release
last release
areas of release
areas established
pasture type
list length list_first list_second
number
number parsed year month
number parsed year month
list length
list length
text <c,text(text)> number date date <c,text> <c,text> text
bubas bison france, spain 1613 april 1983 may 1983 wa nsw, sa, wa winter rainfall
how many different species were released in 1971 ?
WRB JJ JJ NNS VBD-AUX VBN IN CD .
3
select count ( distinct c1 ) from w where c4_year = 1971