It keeps changing between narrative and email.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj|3:nsubj:xsubj	Discourse=elaboration-additional:133->132:0|Entity=(98-abstract-giv:act-cf1*-1-ana)
2	keeps	keep	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	changing	change	VERB	VBG	VerbForm=Ger	2	xcomp	2:xcomp	_
4	between	between	ADP	IN	_	5	case	5:case	_
5	narrative	narrative	NOUN	NN	Number=Sing	3	obl	3:obl:between	Entity=(134-abstract-giv:act-cf2-1-coref)
6	and	and	CCONJ	CC	_	7	cc	7:cc	_
7	email	email	NOUN	NN	Number=Sing	5	conj	3:obl:between|5:conj:and	Entity=(135-abstract-giv:act-cf3-1-coref)|SpaceAfter=No
8	.	.	PUNCT	.	_	2	punct	2:punct	_
