A Health Care Proxy is not written in stone and can be changed.
1	A	a	DET	DT	Definite=Ind|PronType=Art	4	det	4:det	_
2	Health	Health	PROPN	NNP	Number=Sing	3	compound	3:compound	_
3	Care	Care	PROPN	NNP	Number=Sing	4	compound	4:compound	_
4	Proxy	Proxy	PROPN	NNP	Number=Sing	7	nsubj:pass	7:nsubj:pass|13:nsubj:pass	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	7	aux:pass	7:aux:pass	_
6	not	not	PART	RB	_	7	advmod	7:advmod	_
7	written	write	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	_
8	in	in	ADP	IN	_	9	case	9:case	_
9	stone	stone	NOUN	NN	Number=Sing	7	obl	7:obl:in	_
10	and	and	CCONJ	CC	_	13	cc	13:cc	_
11	can	can	AUX	MD	VerbForm=Fin	13	aux	13:aux	_
12	be	be	AUX	VB	VerbForm=Inf	13	aux:pass	13:aux:pass	_
13	changed	change	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	conj	7:conj:and	SpaceAfter=No
14	.	.	PUNCT	.	_	7	punct	7:punct	_
