"Ian is old friends with your teacher, from back when they were both with the survey.
1	"	''	PUNCT	``	_	5	punct	5:punct	Discourse=context-background:92->94:0|SpaceAfter=No
2	Ian	Ian	PROPN	NNP	Number=Sing	5	nsubj	5:nsubj	Entity=(49-person-new-cf1-1-coref)
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	5:cop	_
4	old	old	ADJ	JJ	Degree=Pos	5	amod	5:amod	Entity=(49-person-giv:act-cf1-2-pred
5	friends	friend	NOUN	NNS	Number=Plur	0	root	0:root	_
6	with	with	ADP	IN	_	8	case	8:case	_
7	your	your	PRON	PRP$	Case=Gen|Number=Sing|Person=2|Poss=Yes|PronType=Prs	8	nmod:poss	8:nmod:poss	Entity=(50-person-new-cf4-2-sgl(3-person-giv:inact-cf2-1-ana)
8	teacher	teacher	NOUN	NN	Number=Sing	5	nmod	5:nmod:with	Entity=50)|SpaceAfter=No
9	,	,	PUNCT	,	_	12	punct	12:punct	_
10	from	from	ADP	IN	_	12	case	12:case	Discourse=context-background:93->92:0
11	back	back	ADV	RB	Degree=Pos	12	advmod	12:advmod	_
12	when	when	SCONJ	WRB	PronType=Rel	5	nmod	5:nmod:from	_
13	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	18	nsubj	18:nsubj	_
14	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	18	cop	18:cop	_
15	both	both	ADV	RB	Degree=Pos	18	advmod	18:advmod	_
16	with	with	ADP	IN	_	18	case	18:case	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	18:det	Entity=(51-event-new-cf3-2-sgl
18	survey	survey	NOUN	NN	Number=Sing	12	advcl:relcl	12:advcl:relcl	Entity=51)49)|SpaceAfter=No
19	.	.	PUNCT	.	_	5	punct	5:punct	_
