It belongs to a past.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj	Discourse=joint-other_m:119->117:0|Entity=(121-event-giv:act-cf1*-1-ana-War_in_Darfur)
2	belongs	belong	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	to	to	ADP	IN	_	5	case	5:case	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	5:det	Entity=(128-abstract-new-cf2-2-sgl
5	past	past	NOUN	NN	Number=Sing	2	obl	2:obl:to	Entity=128)|SpaceAfter=No
6	.	.	PUNCT	.	_	2	punct	2:punct	_
