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:
Los nacionalistas descalificaron la propuesta porque, dijeron, está rebajada por imperativo del PSOE, pero calló que su pacto con el PP le impide pedir cambios en el Estatut y la Constitución.
Postion	Tokenization
1	Los
2	nacionalistas
3	descalificaron
4	la
5	propuesta
6	porque
7	,
8	dijeron
9	,
10	está
11	rebajada
12	por
13	imperativo
14	del
15	PSOE
16	,
17	pero
18	calló
19	que
20	su
21	pacto
22	con
23	el
24	PP
25	le
26	impide
27	pedir
28	cambios
29	en
30	el
31	Estatut
32	y
33	la
34	Constitución
35	.
Position	Tokenization	UPOS	Head	Deprel
1	Los	DET	2	det
2	nacionalistas	NOUN	3	nsubj
3	descalificaron	VERB	0	root
4	la	DET	5	det
5	propuesta	NOUN	3	obj
6	porque	SCONJ	11	mark
7	,	PUNCT	8	punct
8	dijeron	VERB	11	parataxis
9	,	PUNCT	8	punct
10	está	AUX	11	cop
11	rebajada	ADJ	3	advcl
12	por	ADP	13	case
13	imperativo	NOUN	11	obl
14	del	ADP	15	case
15	PSOE	PROPN	13	nmod
16	,	PUNCT	18	punct
17	pero	CCONJ	18	cc
18	calló	VERB	3	conj
19	que	SCONJ	26	mark
20	su	DET	21	det
21	pacto	NOUN	26	nsubj
22	con	ADP	24	case
23	el	DET	24	det
24	PP	PROPN	21	nmod
25	le	PRON	26	iobj
26	impide	VERB	18	ccomp
27	pedir	VERB	26	xcomp
28	cambios	NOUN	27	obj
29	en	ADP	31	case
30	el	DET	31	det
31	Estatut	PROPN	28	nmod
32	y	CCONJ	34	cc
33	la	DET	34	det
34	Constitución	PROPN	31	conj
35	.	PUNCT	3	punct