They just really know their stuff!
1	They	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	4:nsubj	_
2	just	just	ADV	RB	_	4	advmod	4:advmod	_
3	really	really	ADV	RB	_	4	advmod	4:advmod	_
4	know	know	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
5	their	their	PRON	PRP$	Case=Gen|Number=Plur|Person=3|Poss=Yes|PronType=Prs	6	nmod:poss	6:nmod:poss	_
6	stuff	stuff	NOUN	NN	Number=Sing	4	obj	4:obj	SpaceAfter=No
7	!	!	PUNCT	.	_	4	punct	4:punct	_
