As a helpful and smart assistant, your task is to parse a given text in any language to Universal Dependency (UD) format including POS tags and dependency relations (HEAD and DEPREL).
Key Components of UD Annotation:
1. Tokens: The fundamental units within UD are tokens. These can be individual words, punctuation marks, or even parts of multi-word expressions. Each token has several associated attributes.
2. UPOS Tags: The UPOS field in the CoNLL-U format represents the universal part-of-speech tag assigned to each word. This tag is part of a universal POS tag set designed to be applicable across different languages. The UPOS tags include categories such as NOUN, VERB, ADJ (adjective), ADV (adverb), PRON (pronoun), DET (determiner), and more. 
3. Dependency Relations: Dependency relations are the core of the syntactic representation. They form a tree structure over the tokens in a sentence. Here's how they work:
    - HEAD: This field indicates the head of the current word. The head is the word that the current word is connected to in the dependency parse tree. The value is an integer that corresponds to the ID of the head word within the same sentence. A value of zero (0) indicates that the word is the root of the sentence.
    - DEPREL: The DEPREL field specifies the type of dependency relation between the current word and its head (as specified in the HEAD field). The value is a universal dependency relation or a language-specific subtype of such a relation.
Note: Blank lines are used to mark the boundaries between sentences.
Example:
Let's analyze this sentence with its UD annotation:
"The big dog chased the cat."
1. Tokenization:
- The
- big
- dog
- chased
- the
- cat
- .
2. UPOS Tags:
- The: DET
- big: ADJ
- dog: NOUN
- chased: VERB
- the: DET
- cat: NOUN
- .: PUNCT
3. Head node (parent):
- The: the parent of this word is "dog" at position 3
- big: the parent of this word is "dog" at position 3
- dog: the parent of this word is "chased" at position 4
- chased: this is the root node, therefore its head is 0
- the: the parent of this word is "cat" at position 6
- cat: the parent of this word is "chased" at position 4
- .: the parent of this word is "chased" at position 4
3. Dependency Relations:
- root(ROOT, chased)
- det(dog, The)
- amod(dog, big)
- nsubj(chased, dog)
- det(cat, the)
- obj(chased, cat)
Combining the above annotations, the final output in UD format is:
Position	Tokenization	UPOS	Head	Deprel
1	The	DET	3	det
2	big	ADJ	3	amod
3	dog	NOUN	4	nsubj
4	chased	VERB	0	ROOT
5	the	DET	6	det
6	cat	NOUN	4	obj
7	.	PUNCT	4	punct
Generate UD annotations for the following tokenized text:
Hasta hace poco los investigadores y científicos no se explicaban muy bien esta circunstancia: - cómo era posible que el organismo humano pudiera atacar con el arma particular más adecuada para cada caso a cada uno de sus enemigos?
Postion	Tokenization
1	Hasta
2	hace
3	poco
4	los
5	investigadores
6	y
7	científicos
8	no
9	se
10	explicaban
11	muy
12	bien
13	esta
14	circunstancia
15	:
16	-
17	cómo
18	era
19	posible
20	que
21	el
22	organismo
23	humano
24	pudiera
25	atacar
26	con
27	el
28	arma
29	particular
30	más
31	adecuada
32	para
33	cada
34	caso
35	a
36	cada
37	uno
38	de
39	sus
40	enemigos
41	?
Position	Tokenization	UPOS	Head	Deprel
1	Hasta	ADP	2	mark
2	hace	VERB	10	advcl
3	poco	ADV	2	obj
4	los	DET	5	det
5	investigadores	NOUN	10	nsubj
6	y	CCONJ	7	cc
7	científicos	NOUN	5	conj
8	no	ADV	10	advmod
9	se	PRON	10	iobj
10	explicaban	VERB	0	root
11	muy	ADV	12	advmod
12	bien	ADV	10	advmod
13	esta	DET	14	det
14	circunstancia	NOUN	10	obj
15	:	PUNCT	19	punct
16	-	PUNCT	19	punct
17	cómo	PRON	19	obl
18	era	AUX	19	cop
19	posible	ADJ	14	acl
20	que	SCONJ	25	mark
21	el	DET	22	det
22	organismo	NOUN	25	nsubj
23	humano	ADJ	22	amod
24	pudiera	AUX	25	aux
25	atacar	VERB	19	csubj
26	con	ADP	28	case
27	el	DET	28	det
28	arma	NOUN	25	obl
29	particular	ADJ	28	amod
30	más	ADV	31	advmod
31	adecuada	ADJ	28	amod
32	para	ADP	34	case
33	cada	DET	34	det
34	caso	NOUN	31	obl
35	a	ADP	37	case
36	cada	DET	37	det
37	uno	PRON	25	obj
38	de	ADP	40	case
39	sus	DET	40	det
40	enemigos	NOUN	37	nmod
41	?	PUNCT	10	punct