I wonder if they were going down a hill!
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	2	nsubj	2:nsubj	_
2	wonder	wonder	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	0:root	_
3	if	if	SCONJ	IN	_	6	mark	6:mark	_
4	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	6	nsubj	6:nsubj	_
5	were	be	AUX	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	6	aux	6:aux	_
6	going	go	VERB	VBG	VerbForm=Ger	2	ccomp	2:ccomp	_
7	down	down	ADP	IN	_	9	case	9:case	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	_
9	hill	hill	NOUN	NN	Number=Sing	6	obl	6:obl:down	SpaceAfter=No
10	!	!	PUNCT	.	_	2	punct	2:punct	_
