I've known the guy for about 10 years.
1-2	I've	_	_	_	_	_	_	_	_
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj	_
2	've	have	AUX	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	3	aux	3:aux	_
3	known	know	VERB	VBN	Tense=Past|VerbForm=Part	0	root	0:root	_
4	the	the	DET	DT	Definite=Def|PronType=Art	5	det	5:det	_
5	guy	guy	NOUN	NN	Number=Sing	3	obj	3:obj	_
6	for	for	ADP	IN	_	9	case	9:case	_
7	about	about	ADV	RB	_	8	advmod	8:advmod	_
8	10	10	NUM	CD	NumForm=Digit|NumType=Card	9	nummod	9:nummod	_
9	years	year	NOUN	NNS	Number=Plur	3	obl	3:obl:for	SpaceAfter=No
10	.	.	PUNCT	.	_	3	punct	3:punct	_
