He visited China again between May and June in 1981 after his wife died in March the same year.
1	He	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj	Discourse=joint-other_m:53->22:2|Entity=(6-person-giv:act-cf1*-1-ana-Yuen_Ren_Chao)
2	visited	visit	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	China	China	PROPN	NNP	Number=Sing	2	obj	2:obj	Entity=(36-place-giv:act-cf3-1-coref-China)
4	again	again	ADV	RB	Degree=Pos	2	advmod	2:advmod	_
5	between	between	ADP	IN	_	6	case	6:case	XML=<date from:::"1981-05" to:::"1981-06">
6	May	May	PROPN	NNP	Number=Sing	2	obl	2:obl:between	Entity=(115-time-acc:com-cf5-1-sgl)
7	and	and	CCONJ	CC	_	8	cc	8:cc	_
8	June	June	PROPN	NNP	Number=Sing	6	conj	2:obl:between|6:conj:and	Entity=(116-time-acc:com-cf6-1-sgl)
9	in	in	ADP	IN	_	10	case	10:case	_
10	1981	1981	NUM	CD	NumForm=Digit|NumType=Card	2	obl	2:obl:in	Entity=(109-time-giv:inact-cf4-1-coref)|XML=</date>
11	after	after	SCONJ	IN	_	14	mark	14:mark	Discourse=context-circumstance:54->53:0
12	his	his	PRON	PRP$	Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	13:nmod:poss	Entity=(51-person-giv:act-cf2-2-coref-Buwei_Yang_Chao(6-person-giv:act-cf1*-1-ana-Yuen_Ren_Chao)
13	wife	wife	NOUN	NN	Number=Sing	14	nsubj	14:nsubj	Entity=51)
14	died	die	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	2	advcl	2:advcl:after	_
15	in	in	ADP	IN	_	16	case	16:case	XML=<date when:::"1981-03">
16	March	March	PROPN	NNP	Number=Sing	14	obl	14:obl:in	Entity=(117-time-acc:com-cf7-1-sgl
17	the	the	DET	DT	Definite=Def|PronType=Art	19	det	19:det	Entity=(109-time-giv:act-cf4-3-coref
18	same	same	ADJ	JJ	Degree=Pos	19	amod	19:amod	_
19	year	year	NOUN	NN	Number=Sing	16	nmod:tmod	16:nmod:tmod	Entity=109)117)|SpaceAfter=No|XML=</date>
20	.	.	PUNCT	.	_	2	punct	2:punct	_
