In 1968, he published his theory of Case Grammar (Fillmore 1968), which highlighted the fact that syntactic structure can be predicted by semantic participants.
1	In	in	ADP	IN	_	2	case	2:case	Discourse=context-background:38->79:1
2	1968	1968	NUM	CD	NumForm=Digit|NumType=Card	5	obl	5:obl:in	Entity=(77-time-new-cf2-1-coref)|SpaceAfter=No|XML=<date when:::"1968"></date>
3	,	,	PUNCT	,	_	2	punct	2:punct	_
4	he	he	PRON	PRP	Case=Nom|Gender=Masc|Number=Sing|Person=3|PronType=Prs	5	nsubj	5:nsubj	Entity=(1-person-giv:act-cf1*-1-ana-Charles_J._Fillmore)
5	published	publish	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
6	his	his	PRON	PRP$	Case=Gen|Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	7	nmod:poss	7:nmod:poss	Entity=(78-abstract-new-cf5-2,4,7-coref(1-person-giv:act-cf1*-1-ana-Charles_J._Fillmore)
7	theory	theory	NOUN	NN	Number=Sing	5	obj	5:obj|17:nsubj	_
8	of	of	ADP	IN	_	10	case	10:case	_
9	Case	Case	PROPN	NNP	Number=Sing	10	compound	10:compound	Entity=(79-abstract-new-cf6-1,2-sgl-Case_grammar|XML=<ref>
10	Grammar	Grammar	PROPN	NNP	Number=Sing	7	nmod	7:nmod:of	Entity=79)|XML=</ref>
11	(	(	PUNCT	-LRB-	_	12	punct	12:punct	Discourse=explanation-evidence:39->38:0|SpaceAfter=No
12	Fillmore	Fillmore	PROPN	NNP	Number=Sing	10	parataxis	10:parataxis	Entity=(80-abstract-new-cf7-1-coref(1-person-giv:act-cf1*-1-coref-Charles_J._Fillmore)
13	1968	1968	NUM	CD	NumForm=Digit|NumType=Card	12	nmod:tmod	12:nmod:tmod	Entity=(77-time-giv:act-cf2-1-coref)80)|SpaceAfter=No|XML=<date when:::"1968"></date>
14	)	)	PUNCT	-RRB-	_	12	punct	12:punct	SpaceAfter=No
15	,	,	PUNCT	,	_	17	punct	17:punct	_
16	which	which	PRON	WDT	PronType=Rel	17	nsubj	7:ref	Discourse=elaboration-attribute:40->38:1
17	highlighted	highlight	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	7	acl:relcl	7:acl:relcl	_
18	the	the	DET	DT	Definite=Def|PronType=Art	19	det	19:det	Entity=(81-abstract-new-cf4-2-sgl
19	fact	fact	NOUN	NN	Number=Sing	17	obj	17:obj	_
20	that	that	SCONJ	IN	_	25	mark	25:mark	Discourse=elaboration-attribute:41->40:0
21	syntactic	syntactic	ADJ	JJ	Degree=Pos	22	amod	22:amod	Entity=(82-abstract-new-cf3-2-sgl
22	structure	structure	NOUN	NN	Number=Sing	25	nsubj:pass	25:nsubj:pass	Entity=82)
23	can	can	AUX	MD	VerbForm=Fin	25	aux	25:aux	_
24	be	be	AUX	VB	VerbForm=Inf	25	aux:pass	25:aux:pass	_
25	predicted	predict	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	19	acl	19:acl:that	_
26	by	by	ADP	IN	_	28	case	28:case	_
27	semantic	semantic	ADJ	JJ	Degree=Pos	28	amod	28:amod	Entity=(83-abstract-new-cf8-2-sgl
28	participants	participant	NOUN	NNS	Number=Plur	25	obl:agent	25:obl:agent	Entity=83)81)78)|SpaceAfter=No
29	.	.	PUNCT	.	_	5	punct	5:punct	_
