It's really strange occurrence, over the years.
1-2	It's	_	_	_	_	_	_	_	_
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	5:nsubj	Discourse=joint-other_m:38->37:0|Entity=(43-event-giv:inact-cf1-1-coref)
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	5:cop	_
3	really	really	ADV	RB	Degree=Pos|Typo=Yes	4	advmod	4:advmod	CorrectForm=a really|Entity=(43-event-giv:act-cf1-3-pred|XML=<sic ana:::"a really"></sic>
4	strange	strange	ADJ	JJ	Degree=Pos	5	amod	5:amod	_
5	occurrence	occurrence	NOUN	NN	Number=Sing	0	root	0:root	Entity=43)|SpaceAfter=No
6	,	,	PUNCT	,	_	9	punct	9:punct	_
7	over	over	ADP	IN	_	9	case	9:case	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	Entity=(45-time-new-cf2-2-sgl
9	years	year	NOUN	NNS	Number=Plur	5	obl	5:obl:over	Entity=45)|SpaceAfter=No
10	.	.	PUNCT	.	_	5	punct	5:punct	_
