Secondly, that is normal behavior as they use the wheels in the night.
1	Secondly	secondly	ADV	RB	_	6	advmod	6:advmod	SpaceAfter=No
2	,	,	PUNCT	,	_	6	punct	6:punct	_
3	that	that	PRON	DT	Number=Sing|PronType=Dem	6	nsubj	6:nsubj	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	cop	6:cop	_
5	normal	normal	ADJ	JJ	Degree=Pos	6	amod	6:amod	_
6	behavior	behavior	NOUN	NN	Number=Sing	0	root	0:root	_
7	as	as	SCONJ	IN	_	9	mark	9:mark	_
8	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	9	nsubj	9:nsubj	_
9	use	use	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	advcl	6:advcl:as	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	11:det	_
11	wheels	wheel	NOUN	NNS	Number=Plur	9	obj	9:obj	_
12	in	in	ADP	IN	_	14	case	14:case	_
13	the	the	DET	DT	Definite=Def|PronType=Art	14	det	14:det	_
14	night	night	NOUN	NN	Number=Sing	9	obl	9:obl:in	SpaceAfter=No
15	.	.	PUNCT	.	_	6	punct	6:punct	_
