Who could stop a suicide murder in the midst of the crowded line waiting to be checked by the airport metal detector?
1	Who	who	PRON	WP	PronType=Int	3	nsubj	3:nsubj	_
2	could	could	AUX	MD	VerbForm=Fin	3	aux	3:aux	_
3	stop	stop	VERB	VB	VerbForm=Inf	0	root	0:root	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	6:det	_
5	suicide	suicide	NOUN	NN	Number=Sing	6	compound	6:compound	_
6	murder	murder	NOUN	NN	Number=Sing	3	obj	3:obj	_
7	in	in	ADP	IN	_	9	case	9:case	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	_
9	midst	midst	NOUN	NN	Number=Sing	6	nmod	6:nmod:in	_
10	of	of	ADP	IN	_	13	case	13:case	_
11	the	the	DET	DT	Definite=Def|PronType=Art	13	det	13:det	_
12	crowded	crowded	ADJ	JJ	Degree=Pos	13	amod	13:amod	_
13	line	line	NOUN	NN	Number=Sing	9	nmod	9:nmod:of	_
14	waiting	wait	VERB	VBG	VerbForm=Ger	13	acl	13:acl	_
15	to	to	PART	TO	_	17	mark	17:mark	_
16	be	be	AUX	VB	VerbForm=Inf	17	aux:pass	17:aux:pass	_
17	checked	check	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	14	advcl	14:advcl:to	_
18	by	by	ADP	IN	_	22	case	22:case	_
19	the	the	DET	DT	Definite=Def|PronType=Art	22	det	22:det	_
20	airport	airport	NOUN	NN	Number=Sing	22	compound	22:compound	_
21	metal	metal	NOUN	NN	Number=Sing	22	compound	22:compound	_
22	detector	detector	NOUN	NN	Number=Sing	17	obl	17:obl:by	SpaceAfter=No
23	?	?	PUNCT	.	_	3	punct	3:punct	_
