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:
Ce stage peut être effectué au sein d'un laboratoire du Centre national de la recherche scientifique (CNRS) et les meilleurs étudiants peuvent se voir proposer une poursuite d'études en doctorat ès sciences au sein de ce laboratoire.
Postion	Tokenization
1	Ce
2	stage
3	peut
4	être
5	effectué
6	au
7	à
8	le
9	sein
10	d'
11	un
12	laboratoire
13	du
14	de
15	le
16	Centre
17	national
18	de
19	la
20	recherche
21	scientifique
22	(
23	CNRS
24	)
25	et
26	les
27	meilleurs
28	étudiants
29	peuvent
30	se
31	voir
32	proposer
33	une
34	poursuite
35	d'
36	études
37	en
38	doctorat
39	ès
40	sciences
41	au
42	à
43	le
44	sein
45	de
46	ce
47	laboratoire
48	.
Position	Tokenization	UPOS	Head	Deprel
1	Ce	DET	2	det
2	stage	NOUN	3	nsubj
3	peut	VERB	0	root
4	être	AUX	5	aux:pass
5	effectué	VERB	3	xcomp:obj
6	au	_	None	_
7	à	ADP	8	case
8	le	DET	8	det
9	sein	NOUN	5	obl:mod
10	d'	ADP	11	case
11	un	DET	11	det
12	laboratoire	NOUN	8	nmod
13	du	_	None	_
14	de	ADP	14	case
15	le	DET	14	det
16	Centre	NOUN	11	nmod
17	national	ADJ	14	amod
18	de	ADP	18	case
19	la	DET	18	det
20	recherche	NOUN	14	nmod
21	scientifique	ADJ	18	amod
22	(	PUNCT	21	punct
23	CNRS	PROPN	14	appos
24	)	PUNCT	21	punct
25	et	CCONJ	27	cc
26	les	DET	26	det
27	meilleurs	ADJ	26	amod
28	étudiants	NOUN	27	nsubj
29	peuvent	VERB	3	conj
30	se	PRON	29	dep:comp
31	voir	VERB	27	xcomp:obj
32	proposer	VERB	29	xcomp:obj
33	une	DET	32	det
34	poursuite	NOUN	30	obj
35	d'	ADP	34	case
36	études	NOUN	32	nmod
37	en	ADP	36	case
38	doctorat	NOUN	32	nmod
39	ès	ADP	38	case
40	sciences	NOUN	36	nmod
41	au	_	None	_
42	à	ADP	41	case
43	le	DET	41	det
44	sein	NOUN	30	obl:mod
45	de	ADP	44	case
46	ce	DET	44	det
47	laboratoire	NOUN	41	nmod
48	.	PUNCT	3	punct