When I bought it.
1	When	when	ADV	WRB	PronType=Rel	0	root	0:root	Discourse=context-circumstance:123->122:0
2	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj	Entity=(2-person-giv:inact-cf2-1-ana)
3	bought	buy	VERB	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	1	advcl:relcl	1:advcl:relcl	_
4	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	obj	3:obj	Entity=(1-object-giv:act-cf1*-1-ana)|SpaceAfter=No
5	.	.	PUNCT	.	_	1	punct	1:punct	_
