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:
Se trata, en efecto, de introducir un ligando unido al metal del metalomacrociclo, lo que permite la formación de especies poliméricas en las que la distancia entre macrociclos (fig. 2) viene fijada por el ligando L.
Postion	Tokenization
1	Se
2	trata
3	,
4	en
5	efecto
6	,
7	de
8	introducir
9	un
10	ligando
11	unido
12	al
13	metal
14	del
15	metalomacrociclo
16	,
17	lo
18	que
19	permite
20	la
21	formación
22	de
23	especies
24	poliméricas
25	en
26	las
27	que
28	la
29	distancia
30	entre
31	macrociclos
32	(
33	fig.
34	2
35	)
36	viene
37	fijada
38	por
39	el
40	ligando
41	L.
Position	Tokenization	UPOS	Head	Deprel
1	Se	PRON	2	expl:impers
2	trata	VERB	0	root
3	,	PUNCT	4	punct
4	en	ADP	2	advmod
5	efecto	NOUN	4	fixed
6	,	PUNCT	4	punct
7	de	ADP	8	mark
8	introducir	VERB	2	xcomp
9	un	DET	10	det
10	ligando	NOUN	8	obj
11	unido	ADJ	10	amod
12	al	ADP	13	case
13	metal	NOUN	11	obj
14	del	ADP	15	case
15	metalomacrociclo	NOUN	13	nmod
16	,	PUNCT	19	punct
17	lo	PRON	19	det
18	que	PRON	19	nsubj
19	permite	VERB	8	advcl
20	la	DET	21	det
21	formación	NOUN	19	obj
22	de	ADP	23	case
23	especies	NOUN	21	nmod
24	poliméricas	ADJ	23	amod
25	en	ADP	27	case
26	las	DET	27	det
27	que	PRON	36	obl
28	la	DET	29	det
29	distancia	NOUN	36	nsubj
30	entre	ADP	31	case
31	macrociclos	NOUN	29	nmod
32	(	PUNCT	33	punct
33	fig.	NOUN	29	dep
34	2	NUM	33	appos
35	)	PUNCT	33	punct
36	viene	VERB	23	acl
37	fijada	ADJ	36	obj
38	por	ADP	40	case
39	el	DET	40	det
40	ligando	NOUN	37	obl
41	L.	NOUN	40	appos