In the 1950s he was among the first members of the Society for General Systems Research.
1	In	in	ADP	IN	_	3	case	3:case	Discourse=joint-sequence_m:43->22:1
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	3:det	Entity=(88-time-acc:com-cf3-2-sgl
3	1950s	1950s	NOUN	NNS	Number=Plur	9	nmod	9:nmod:in	Entity=88)|XML=<date from:::"1950-01-01" to:::"1959-12-31"></date>
4	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	9	nsubj	9:nsubj	Entity=(6-person-giv:act-cf1*-1-ana-Yuen_Ren_Chao)
5	was	be	AUX	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	9	cop	9:cop	_
6	among	among	ADP	IN	_	9	case	9:case	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	Bridge=6<89|Entity=(89-person-acc:inf-cf2-3-sgl
8	first	first	ADJ	JJ	Degree=Pos|NumType=Ord	9	amod	9:amod	_
9	members	member	NOUN	NNS	Number=Plur	0	root	0:root	_
10	of	of	ADP	IN	_	12	case	12:case	_
11	the	the	DET	DT	Definite=Def|PronType=Art	12	det	12:det	Entity=(90-organization-new-cf4-2,4,5,6-sgl-International_Society_for_the_Systems_Sciences
12	Society	Society	PROPN	NNP	Number=Sing	9	nmod	9:nmod:of	XML=<ref target:::"https://en.wikipedia.org/wiki/International_Society_for_the_Systems_Sciences">
13	for	for	ADP	IN	_	16	case	16:case	_
14	General	General	ADJ	NNP	Degree=Pos|Number=Sing	16	amod	16:amod	Entity=(91-abstract-new-cf5-1,2,3-sgl-Systems_science
15	Systems	System	PROPN	NNPS	Number=Plur	16	compound	16:compound	_
16	Research	Research	PROPN	NNP	Number=Sing	12	nmod	12:nmod:for	Entity=91)90)89)|SpaceAfter=No|XML=</ref>
17	.	.	PUNCT	.	_	9	punct	9:punct	_
