It was his wife they were draining away.
1	It	it	PRON	PERS-SG	_	2	expl	_	_
2	was	be	AUX	PAST	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	0	root	_	_
3	his	he	PRON	P3SG-GEN	Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	4	nmod:poss	_	_
4	wife	wife	NOUN	SG-NOM	Number=Sing	2	dislocated	_	_
5	they	they	PRON	PERS-PL-NOM	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
6	were	be	AUX	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	7	aux	_	_
7	draining	drain	VERB	ING	Tense=Pres|VerbForm=Part	4	acl	_	_
8	away	away	ADV	_	_	7	advmod	_	SpaceAfter=No
9	.	.	PUNCT	Period	_	2	punct	_	_
