What are they killing killing killing over?
1	What	what	PRON	WP	PronType=Int	4	obl	4:obl:over	Discourse=restatement-repetition_m:116->115:0
2	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	4	aux	4:aux|5:aux|6:aux	_
3	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	4:nsubj|5:nsubj|6:nsubj	Entity=(125-person-giv:act-cf1*-1-ana)
4	killing	kill	VERB	VBG	Tense=Pres|VerbForm=Part	0	root	0:root	_
5	killing	kill	VERB	VBG	VerbForm=Ger	4	conj	4:conj	_
6	killing	kill	VERB	VBG	VerbForm=Ger	4	conj	4:conj	_
7	over	over	ADP	IN	_	1	case	1:case	SpaceAfter=No
8	?	?	PUNCT	.	_	4	punct	4:punct	_
