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:
They were very polite, eager to answer any questions and willing to wait for us to return from vacation to begin installing our fence.
Postion	Tokenization
1	They
2	were
3	very
4	polite
5	,
6	eager
7	to
8	answer
9	any
10	questions
11	and
12	willing
13	to
14	wait
15	for
16	us
17	to
18	return
19	from
20	vacation
21	to
22	begin
23	installing
24	our
25	fence
26	.
Position	Tokenization	UPOS	Head	Deprel
1	They	PRON	4	nsubj
2	were	AUX	4	cop
3	very	ADV	4	advmod
4	polite	ADJ	0	root
5	,	PUNCT	6	punct
6	eager	ADJ	4	conj
7	to	PART	8	mark
8	answer	VERB	6	xcomp
9	any	DET	10	det
10	questions	NOUN	8	obj
11	and	CCONJ	12	cc
12	willing	ADJ	4	conj
13	to	PART	14	mark
14	wait	VERB	12	xcomp
15	for	SCONJ	18	mark
16	us	PRON	18	nsubj
17	to	PART	18	mark
18	return	VERB	14	advcl
19	from	ADP	20	case
20	vacation	NOUN	18	obl
21	to	PART	22	mark
22	begin	VERB	14	advcl
23	installing	VERB	22	xcomp
24	our	PRON	25	nmod:poss
25	fence	NOUN	23	obj
26	.	PUNCT	4	punct