Look at this.
1	Look	look	VERB	VB	Mood=Imp|Person=2|VerbForm=Fin	0	root	0:root	Discourse=explanation-justify:22->21:0
2	at	at	ADP	IN	_	3	case	3:case	_
3	this	this	PRON	DT	Number=Sing|PronType=Dem	1	obl	1:obl:at	Entity=(16-object-giv:act-cf1*-1-ana)|SpaceAfter=No
4	.	.	PUNCT	.	_	1	punct	1:punct	_
