It was not very hard to explain what really happened, he thought.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	expl	5:expl	Discourse=organization-preparation:74->77:4|Entity=(90-abstract-new-cf2-1-cata)
2	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	5	cop	5:cop	_
3	not	not	PART	RB	Polarity=Neg	5	advmod	5:advmod	_
4	very	very	ADV	RB	_	5	advmod	5:advmod	_
5	hard	hard	ADJ	JJ	Degree=Pos	0	root	0:root	_
6	to	to	PART	TO	_	7	mark	7:mark	Entity=(90-abstract-acc:com-cf2-2-coref
7	explain	explain	VERB	VB	VerbForm=Inf	5	csubj	5:csubj	_
8	what	what	PRON	WP	PronType=Rel	7	obj	7:obj	_
9	really	really	ADV	RB	Degree=Pos	10	advmod	10:advmod	_
10	happened	happen	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	8	acl:relcl	8:acl:relcl	Entity=90)|SpaceAfter=No
11	,	,	PUNCT	,	_	13	punct	13:punct	_
12	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	13	nsubj	13:nsubj	Discourse=attribution-positive:75->74:0|Entity=(1-person-giv:act-cf1*-1-ana)
13	thought	think	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	5	parataxis	5:parataxis	SpaceAfter=No
14	.	.	PUNCT	.	_	5	punct	5:punct	_
