It's helpful to know a quite a bit about bull fighting.
1-2	It's	_	_	_	_	_	_	_	_
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	expl	3:expl	_
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	3:cop	_
3	helpful	helpful	ADJ	JJ	Degree=Pos	0	root	0:root	_
4	to	to	PART	TO	_	5	mark	5:mark	_
5	know	know	VERB	VB	VerbForm=Inf	3	csubj	3:csubj	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	5	reparandum	5:reparandum	_
7	quite	quite	DET	PDT	_	9	det:predet	9:det:predet	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	_
9	bit	bit	NOUN	NN	Number=Sing	5	obj	5:obj	_
10	about	about	ADP	IN	_	12	case	12:case	_
11	bull	bull	NOUN	NN	Number=Sing	12	compound	12:compound	_
12	fighting	fighting	NOUN	NN	Number=Sing	9	nmod	9:nmod:about	SpaceAfter=No
13	.	.	PUNCT	.	_	3	punct	3:punct	_
