non si sa:
1	non	Non	ADV	BN	PronType=Neg	3	advmod	_	_
2	si	si	PRON	PC	Clitic=Yes|Person=3|PronType=Prs	3	expl	_	_
3	sa	sapere	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	SpaceAfter=No
4	:	:	PUNCT	FC	_	3	punct	_	_
