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 text: V dopise, který unionisté zaslali premiérovi a který byl včera zveřejněn v Londýně, označili za "zcela nepřijatelný" existující návrh na celoirský orgán pro správu Severního Irska.
Position	Tokenization	UPOS	Head	Deprel
1	V	ADP	2	case
2	dopise	NOUN	16	obl
3	,	PUNCT	6	punct
4	který	DET	6	obj
5	unionisté	NOUN	6	nsubj
6	zaslali	VERB	2	acl:relcl
7	premiérovi	NOUN	6	obl:arg
8	a	CCONJ	12	cc
9	který	DET	12	nsubj:pass
10	byl	AUX	12	aux:pass
11	včera	ADV	12	advmod
12	zveřejněn	ADJ	6	conj
13	v	ADP	14	case
14	Londýně	PROPN	12	obl
15	,	PUNCT	6	punct
16	označili	VERB	0	root
17	za	ADP	20	case
18	"	PUNCT	20	punct
19	zcela	ADV	20	advmod
20	nepřijatelný	ADJ	16	obl:arg
21	"	PUNCT	20	punct
22	existující	ADJ	23	amod
23	návrh	NOUN	16	obj
24	na	ADP	26	case
25	celoirský	ADJ	26	amod
26	orgán	NOUN	23	nmod
27	pro	ADP	28	case
28	správu	NOUN	26	nmod
29	Severního	ADJ	30	amod
30	Irska	PROPN	28	nmod
31	.	PUNCT	16	punct