"An air-quality cleanup would improve crop yields [...]
1	"	''	PUNCT	``	_	8	punct	8:punct	Discourse=explanation-justify:49->48:2|SpaceAfter=No
2	An	a	DET	DT	Definite=Ind|PronType=Art	6	det	6:det	Entity=(109-abstract-giv:act-cf1*-5-coref
3	air	air	NOUN	NN	Number=Sing	5	compound	5:compound	Entity=(73-abstract-giv:inact-cf3-3-coref|SpaceAfter=No|XML=<w>
4	-	-	PUNCT	HYPH	_	3	punct	3:punct	SpaceAfter=No
5	quality	quality	NOUN	NN	Number=Sing	6	compound	6:compound	Entity=73)|XML=</w>
6	cleanup	cleanup	NOUN	NN	Number=Sing	8	nsubj	8:nsubj	Entity=109)
7	would	would	AUX	MD	Number=Sing|Person=3|VerbForm=Fin	8	aux	8:aux	_
8	improve	improve	VERB	VB	VerbForm=Inf	0	root	0:root	_
9	crop	crop	NOUN	NN	Number=Sing	10	compound	10:compound	Entity=(22-object-giv:inact-cf2-2-coref(6-plant-giv:inact-cf4-1-coref)
10	yields	yield	NOUN	NNS	Number=Plur	8	obj	8:obj	Entity=22)
11	[...]	[...]	PUNCT	.	_	8	punct	8:punct	_
