Dudley hitched up his trousers, which were slipping down his fat bottom.
1	Dudley	Dudley	PROPN	SG-NOM	Number=Sing	2	nsubj	_	_
2	hitched	hitch	VERB	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	0	root	_	_
3	up	up	ADV	_	_	2	advmod	_	_
4	his	he	PRON	P3SG-GEN	Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	trousers	trouser	NOUN	PL-NOM	Number=Plur	2	obj	_	SpaceAfter=No
6	,	,	PUNCT	Comma	_	9	punct	_	_
7	which	which	PRON	WH-REL	PronType=Rel	9	nsubj	_	_
8	were	be	AUX	PAST	Mood=Ind|Tense=Past|VerbForm=Fin	9	aux	_	_
9	slipping	slip	VERB	ING	Tense=Pres|VerbForm=Part	5	acl:relcl	_	_
10	down	down	ADV	_	_	9	advmod	_	_
11	his	he	PRON	P3SG-GEN	Gender=Masc|Number=Sing|Person=3|Poss=Yes|PronType=Prs	13	nmod:poss	_	_
12	fat	fat	ADJ	POS	Degree=Pos	13	amod	_	_
13	bottom	bottom	NOUN	SG-NOM	Number=Sing	9	obj	_	SpaceAfter=No
14	.	.	PUNCT	Period	_	2	punct	_	_
