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:
El filtro gris parecía respetar aquella ventana a la luz y el calor, pero las nubes persistían inmediatas como una amenaza total, como un ejército concentrado en la frontera, a punto para invadir la única nación hermosa y libre que quedara en el mundo.
Postion	Tokenization
1	El
2	filtro
3	gris
4	parecía
5	respetar
6	aquella
7	ventana
8	a
9	la
10	luz
11	y
12	el
13	calor
14	,
15	pero
16	las
17	nubes
18	persistían
19	inmediatas
20	como
21	una
22	amenaza
23	total
24	,
25	como
26	un
27	ejército
28	concentrado
29	en
30	la
31	frontera
32	,
33	a
34	punto
35	para
36	invadir
37	la
38	única
39	nación
40	hermosa
41	y
42	libre
43	que
44	quedara
45	en
46	el
47	mundo
48	.
Position	Tokenization	UPOS	Head	Deprel
1	El	DET	2	det
2	filtro	NOUN	4	nsubj
3	gris	ADJ	2	amod
4	parecía	VERB	0	root
5	respetar	VERB	4	ccomp
6	aquella	DET	7	det
7	ventana	NOUN	5	obj
8	a	ADP	10	case
9	la	DET	10	det
10	luz	NOUN	5	obl
11	y	CCONJ	13	cc
12	el	DET	13	det
13	calor	NOUN	10	conj
14	,	PUNCT	18	punct
15	pero	CCONJ	18	cc
16	las	DET	17	det
17	nubes	NOUN	18	nsubj
18	persistían	VERB	4	conj
19	inmediatas	ADJ	18	obj
20	como	SCONJ	22	mark
21	una	DET	22	det
22	amenaza	NOUN	19	nmod
23	total	ADJ	22	amod
24	,	PUNCT	22	punct
25	como	SCONJ	27	mark
26	un	DET	27	det
27	ejército	NOUN	22	nmod
28	concentrado	ADJ	27	amod
29	en	ADP	31	case
30	la	DET	31	det
31	frontera	NOUN	28	obl
32	,	PUNCT	33	punct
33	a	ADP	27	advmod
34	punto	NOUN	33	fixed
35	para	ADP	36	mark
36	invadir	VERB	33	advcl
37	la	DET	39	det
38	única	ADJ	39	amod
39	nación	NOUN	36	obj
40	hermosa	ADJ	39	amod
41	y	CCONJ	42	cc
42	libre	ADJ	40	conj
43	que	PRON	44	nsubj
44	quedara	VERB	39	acl
45	en	ADP	47	case
46	el	DET	47	det
47	mundo	NOUN	44	obl
48	.	PUNCT	4	punct