I thought of canceling the lesson once again because I didn't feel comfortable driving an SUV.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	2	nsubj	2:nsubj	_
2	thought	think	VERB	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	of	of	SCONJ	IN	_	4	mark	4:mark	_
4	canceling	cancel	VERB	VBG	VerbForm=Ger	2	advcl	2:advcl:of	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	6:det	_
6	lesson	lesson	NOUN	NN	Number=Sing	4	obj	4:obj	_
7	once	once	ADV	RB	NumType=Mult	8	advmod	8:advmod	_
8	again	again	ADV	RB	_	4	advmod	4:advmod	_
9	because	because	SCONJ	IN	_	13	mark	13:mark	_
10	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	13	nsubj	13:nsubj|14:nsubj:xsubj	_
11-12	didn't	_	_	_	_	_	_	_	_
11	did	do	AUX	VBD	Mood=Ind|Number=Sing|Person=1|Tense=Past|VerbForm=Fin	13	aux	13:aux	_
12	n't	not	PART	RB	_	13	advmod	13:advmod	_
13	feel	feel	VERB	VB	VerbForm=Inf	4	advcl	4:advcl:because	_
14	comfortable	comfortable	ADJ	JJ	Degree=Pos	13	xcomp	13:xcomp	_
15	driving	drive	VERB	VBG	VerbForm=Ger	14	advcl	14:advcl	_
16	an	a	DET	DT	Definite=Ind|PronType=Art	17	det	17:det	_
17	SUV	suv	NOUN	NN	Number=Sing	15	obj	15:obj	SpaceAfter=No
18	.	.	PUNCT	.	_	2	punct	2:punct	_
