I don't know.
1	I	I	PRON	PERS-P1SG-NOM	Case=Nom|Number=Sing|Person=1|PronType=Prs	4	nsubj	_	_
2	do	do	AUX	PRES-AUX	Mood=Ind|Tense=Pres|VerbForm=Fin	4	aux	_	SpaceAfter=No
3	n't	not	PART	NEG	_	4	advmod	_	_
4	know	know	VERB	INF	VerbForm=Inf	0	root	_	SpaceAfter=No
5	.	.	PUNCT	Period	_	4	punct	_	_
