I am aware of the maintenance involved in keeping a tank this size.
1	I	I	PRON	PRP	Case=Nom|Number=Sing|Person=1|PronType=Prs	3	nsubj	3:nsubj	_
2	am	be	AUX	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	3	cop	3:cop	_
3	aware	aware	ADJ	JJ	Degree=Pos	0	root	0:root	_
4	of	of	ADP	IN	_	6	case	6:case	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	6:det	_
6	maintenance	maintenance	NOUN	NN	Number=Sing	3	obl	3:obl:of	_
7	involved	involve	VERB	VBN	Tense=Past|VerbForm=Part	6	acl	6:acl	_
8	in	in	SCONJ	IN	_	9	mark	9:mark	_
9	keeping	keep	VERB	VBG	VerbForm=Ger	7	advcl	7:advcl:in	_
10	a	a	DET	DT	Definite=Ind|PronType=Art	11	det	11:det	_
11	tank	tank	NOUN	NN	Number=Sing	9	obj	9:obj	_
12	this	this	DET	DT	Number=Sing|PronType=Dem	13	det	13:det	_
13	size	size	NOUN	NN	Number=Sing	11	nmod:npmod	11:nmod:npmod	SpaceAfter=No
14	.	.	PUNCT	.	_	3	punct	3:punct	_
