Why have the staircases not been improved since my accident?
1	Why	why	ADV	B	_	7	advmod	_	_
2	have	have	AUX	VA	Mood=Imp|Number=Sing|Person=2|Tense=Pres|VerbForm=Fin	7	aux	_	_
3	the	the	DET	RD	Definite=Def|PronType=Art	4	det	_	_
4	staircases	staircase	NOUN	S	Number=Plur	7	nsubj:pass	_	_
5	not	not	PART	PART	Polarity=Neg	7	advmod	_	_
6	been	be	AUX	VA	Tense=Past|VerbForm=Part	7	aux:pass	_	_
7	improved	improve	VERB	V	Tense=Past|VerbForm=Part	0	root	_	_
8	since	since	ADP	E	_	10	case	_	_
9	my	my	DET	AP	Number=Sing|Poss=Yes|PronType=Prs	10	nmod:poss	_	_
10	accident	accident	NOUN	S	Number=Sing	7	obl	_	SpaceAfter=No
11	?	?	PUNCT	FS	_	7	punct	_	_
