All that is needed now is to determine whether it works in practice.
1	All	all	PRON	PI	PronType=Ind	6	nsubj	_	_
2	that	that	PRON	PR	PronType=Rel	4	nsubj:pass	_	_
3	is	be	AUX	VA	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	needed	need	VERB	V	Tense=Past|VerbForm=Part	1	acl:relcl	_	_
5	now	now	ADV	B	_	4	advmod	_	_
6	is	be	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	to	to	PART	PART	_	8	mark	_	_
8	determine	determine	VERB	V	VerbForm=Inf	6	ccomp	_	_
9	whether	whether	SCONJ	CS	_	11	mark	_	_
10	it	it	PRON	PE	Number=Sing|Person=3|PronType=Prs	11	nsubj	_	_
11	works	work	VERB	V	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	ccomp	_	_
12	in	in	ADP	E	_	13	case	_	_
13	practice	practice	NOUN	S	Number=Sing	11	obl	_	SpaceAfter=No
14	.	.	PUNCT	FS	_	6	punct	_	_
