Why did you choose to study mathematics?
1	Why	why	ADV	WRB	PronType=Int	4	advmod	4:advmod	Discourse=topic-question:29->30:3|Entity=(38-abstract-new-cf3-4-disc
2	did	do	AUX	VBD	Mood=Ind|Number=Sing|Person=2|Tense=Past|VerbForm=Fin	4	aux	4:aux	_
3	you	you	PRON	PRP	Case=Nom|Number=Sing|Person=2|PronType=Prs	4	nsubj	4:nsubj|6:nsubj:xsubj	Entity=(3-person-giv:act-cf1*-1-ana-Aner_Shalev)
4	choose	choose	VERB	VB	VerbForm=Inf	0	root	0:root	_
5	to	to	PART	TO	_	6	mark	6:mark	_
6	study	study	VERB	VB	VerbForm=Inf	4	xcomp	4:xcomp	_
7	mathematics	mathematics	NOUN	NN	Number=Sing	6	obj	6:obj	Entity=(39-abstract-new-cf2-1-sgl)|SpaceAfter=No
8	?	?	PUNCT	.	_	4	punct	4:punct	Entity=38)
