Don't they understand English?
1	Do	do	AUX	PRES	Mood=Ind|Tense=Pres|VerbForm=Fin	4	aux	_	SpaceAfter=No
2	n't	not	PART	NEG	_	4	advmod	_	_
3	they	they	PRON	PERS-PL-NOM	Case=Nom|Number=Plur|Person=3|PronType=Prs	4	nsubj	_	_
4	understand	understand	VERB	INF	VerbForm=Inf	0	root	_	_
5	English	english	NOUN	SG-NOM	Case=Nom	4	obj	_	SpaceAfter=No
6	?	?	PUNCT	QuestionMark	_	4	punct	_	_
