It is not clear for which companies Shakespeare wrote his early plays.
1	It	it	PRON	PE	Number=Sing|Person=3|PronType=Prs	4	expl	_	_
2	is	be	AUX	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
3	not	not	PART	PART	Polarity=Neg	4	advmod	_	_
4	clear	clear	NOUN	S	Number=Sing	0	root	_	_
5	for	for	ADP	E	_	7	case	_	_
6	which	which	DET	DQ	PronType=Int	7	det	_	_
7	companies	company	NOUN	S	Number=Plur	9	obl	_	_
8	Shakespeare	Shakespeare	PROPN	SP	_	9	nsubj	_	_
9	wrote	write	VERB	V	Mood=Ind|Person=3|Tense=Past|VerbForm=Fin	4	csubj	_	_
10	his	his	DET	AP	Poss=Yes|PronType=Prs	12	nmod:poss	_	_
11	early	early	ADJ	A	Degree=Pos	12	amod	_	_
12	plays	play	NOUN	S	Number=Plur	9	obj	_	SpaceAfter=No
13	.	.	PUNCT	FS	_	4	punct	_	_
