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:
Según testigos, los agresores, veteranos de la guerra de independencia, tendieron una emboscada a los opositores y, con piedras y palos, se ensañaron particularmente con las personas de raza blanca que habían acudido a la manifestación, informa Reuters.
Postion	Tokenization
1	Según
2	testigos
3	,
4	los
5	agresores
6	,
7	veteranos
8	de
9	la
10	guerra
11	de
12	independencia
13	,
14	tendieron
15	una
16	emboscada
17	a
18	los
19	opositores
20	y
21	,
22	con
23	piedras
24	y
25	palos
26	,
27	se
28	ensañaron
29	particularmente
30	con
31	las
32	personas
33	de
34	raza
35	blanca
36	que
37	habían
38	acudido
39	a
40	la
41	manifestación
42	,
43	informa
44	Reuters
45	.
Position	Tokenization	UPOS	Head	Deprel
1	Según	ADP	2	case
2	testigos	NOUN	14	obl
3	,	PUNCT	2	punct
4	los	DET	5	det
5	agresores	NOUN	14	nsubj
6	,	PUNCT	7	punct
7	veteranos	NOUN	5	appos
8	de	ADP	10	case
9	la	DET	10	det
10	guerra	NOUN	7	nmod
11	de	ADP	12	case
12	independencia	NOUN	10	nmod
13	,	PUNCT	7	punct
14	tendieron	VERB	43	ccomp
15	una	DET	16	det
16	emboscada	NOUN	14	obj
17	a	ADP	19	case
18	los	DET	19	det
19	opositores	NOUN	14	obj
20	y	CCONJ	28	cc
21	,	PUNCT	23	punct
22	con	ADP	23	case
23	piedras	NOUN	28	obl
24	y	CCONJ	25	cc
25	palos	NOUN	23	conj
26	,	PUNCT	23	punct
27	se	PRON	28	expl:pv
28	ensañaron	VERB	14	conj
29	particularmente	ADV	28	obj
30	con	ADP	29	case
31	las	DET	32	det
32	personas	NOUN	29	nmod
33	de	ADP	34	case
34	raza	NOUN	32	nmod
35	blanca	ADJ	34	amod
36	que	PRON	38	nsubj
37	habían	AUX	38	aux
38	acudido	VERB	32	acl
39	a	ADP	41	case
40	la	DET	41	det
41	manifestación	NOUN	38	obl
42	,	PUNCT	14	punct
43	informa	VERB	0	root
44	Reuters	PROPN	43	nsubj
45	.	PUNCT	43	punct