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:
En tête, une vingtaine d'écoliers, accompagnés par quelques enseignants, portaient des fleurs qu'ils ont ensuite déposées à l'endroit où un groupe de 23 enfants a été percuté par le fourgon à la sortie d'un rond-point, à quelques centaines de mètres de l'établissement.
Postion	Tokenization
1	En
2	tête
3	,
4	une
5	vingtaine
6	d'
7	écoliers
8	,
9	accompagnés
10	par
11	quelques
12	enseignants
13	,
14	portaient
15	des
16	fleurs
17	qu'
18	ils
19	ont
20	ensuite
21	déposées
22	à
23	l'
24	endroit
25	où
26	un
27	groupe
28	de
29	23
30	enfants
31	a
32	été
33	percuté
34	par
35	le
36	fourgon
37	à
38	la
39	sortie
40	d'
41	un
42	rond-point
43	,
44	à
45	quelques
46	centaines
47	de
48	mètres
49	de
50	l'
51	établissement
52	.
Position	Tokenization	UPOS	Head	Deprel
1	En	ADP	14	advmod
2	tête	NOUN	1	fixed
3	,	PUNCT	1	punct
4	une	DET	5	det
5	vingtaine	NUM	14	nsubj
6	d'	ADP	7	case
7	écoliers	NOUN	5	nmod
8	,	PUNCT	9	punct
9	accompagnés	VERB	7	acl
10	par	ADP	12	case
11	quelques	DET	12	det
12	enseignants	NOUN	9	obl:agent
13	,	PUNCT	5	punct
14	portaient	VERB	0	root
15	des	DET	16	det
16	fleurs	NOUN	14	obj
17	qu'	PRON	21	obj
18	ils	PRON	21	nsubj
19	ont	AUX	21	aux:tense
20	ensuite	ADV	21	advmod
21	déposées	VERB	16	acl:relcl
22	à	ADP	24	case
23	l'	DET	24	det
24	endroit	NOUN	21	obl:arg
25	où	ADV	33	advmod
26	un	DET	27	det
27	groupe	NOUN	33	nsubj:pass
28	de	ADP	30	case
29	23	NUM	30	nummod
30	enfants	NOUN	27	nmod
31	a	AUX	33	aux:tense
32	été	AUX	33	aux:pass
33	percuté	VERB	24	acl:relcl
34	par	ADP	36	case
35	le	DET	36	det
36	fourgon	NOUN	33	obl:agent
37	à	ADP	39	case
38	la	DET	39	det
39	sortie	NOUN	33	obl:mod
40	d'	ADP	42	case
41	un	DET	42	det
42	rond-point	NOUN	39	nmod
43	,	PUNCT	46	punct
44	à	ADP	46	case
45	quelques	DET	46	det
46	centaines	NOUN	42	nmod
47	de	ADP	48	case
48	mètres	NOUN	46	nmod
49	de	ADP	51	case
50	l'	DET	51	det
51	établissement	NOUN	46	nmod
52	.	PUNCT	14	punct