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:
En aquellos polímeros conductores para los que no es posible la formación de solitones se ha propuesto la formación de polarones (iones-radical) y bipolarones (dicationes cuyas cargas se hallan en una misma región del polímero).
Postion	Tokenization
1	En
2	aquellos
3	polímeros
4	conductores
5	para
6	los
7	que
8	no
9	es
10	posible
11	la
12	formación
13	de
14	solitones
15	se
16	ha
17	propuesto
18	la
19	formación
20	de
21	polarones
22	(
23	iones-radical
24	)
25	y
26	bipolarones
27	(
28	dicationes
29	cuyas
30	cargas
31	se
32	hallan
33	en
34	una
35	misma
36	región
37	del
38	polímero
39	)
40	.
Position	Tokenization	UPOS	Head	Deprel
1	En	ADP	3	case
2	aquellos	DET	3	det
3	polímeros	NOUN	17	obl
4	conductores	ADJ	3	amod
5	para	ADP	7	case
6	los	DET	7	det
7	que	PRON	10	obj
8	no	ADV	10	advmod
9	es	AUX	10	cop
10	posible	ADJ	3	acl
11	la	DET	12	det
12	formación	NOUN	10	nsubj
13	de	ADP	14	case
14	solitones	NOUN	12	nmod
15	se	PRON	17	expl:pass
16	ha	AUX	17	aux
17	propuesto	VERB	0	root
18	la	DET	19	det
19	formación	NOUN	17	nsubj
20	de	ADP	21	case
21	polarones	NOUN	19	nmod
22	(	PUNCT	23	punct
23	iones-radical	NOUN	21	appos
24	)	PUNCT	23	punct
25	y	CCONJ	26	cc
26	bipolarones	NOUN	21	conj
27	(	PUNCT	28	punct
28	dicationes	NOUN	26	appos
29	cuyas	PRON	30	nmod
30	cargas	NOUN	32	nsubj
31	se	PRON	32	expl:pv
32	hallan	VERB	28	acl
33	en	ADP	36	case
34	una	DET	36	det
35	misma	DET	34	det
36	región	NOUN	32	obl
37	del	ADP	38	case
38	polímero	NOUN	36	nmod
39	)	PUNCT	28	punct
40	.	PUNCT	17	punct