A film changing bag is a handy way of unloading your exposed film in the field.
1	A	a	DET	DT	Definite=Ind|PronType=Art	4	det	4:det	_
2	film	film	NOUN	NN	Number=Sing	3	compound	3:compound	_
3	changing	changing	NOUN	NN	Number=Sing	4	compound	4:compound	_
4	bag	bag	NOUN	NN	Number=Sing	8	nsubj	8:nsubj	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	8:cop	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	8:det	_
7	handy	handy	ADJ	JJ	Degree=Pos	8	amod	8:amod	_
8	way	way	NOUN	NN	Number=Sing	0	root	0:root	_
9	of	of	SCONJ	IN	_	10	mark	10:mark	_
10	unloading	unload	VERB	VBG	VerbForm=Ger	8	acl	8:acl:of	_
11	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	13	nmod:poss	13:nmod:poss	_
12	exposed	expose	VERB	VBN	Tense=Past|VerbForm=Part	13	amod	13:amod	_
13	film	film	NOUN	NN	Number=Sing	10	obj	10:obj	_
14	in	in	ADP	IN	_	16	case	16:case	_
15	the	the	DET	DT	Definite=Def|PronType=Art	16	det	16:det	_
16	field	field	NOUN	NN	Number=Sing	10	obl	10:obl:in	SpaceAfter=No
17	.	.	PUNCT	.	_	8	punct	8:punct	_
