What is behind the suicide murders?
1	What	what	PRON	WP	PronType=Int	6	nsubj	6:nsubj	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	6:cop	_
3	behind	behind	ADP	IN	_	6	case	6:case	_
4	the	the	DET	DT	Definite=Def|PronType=Art	6	det	6:det	_
5	suicide	suicide	NOUN	NN	Number=Sing	6	compound	6:compound	_
6	murders	murder	NOUN	NNS	Number=Plur	0	root	0:root	SpaceAfter=No
7	?	?	PUNCT	.	_	6	punct	6:punct	_
