Don't feed them broccoli, cauliflower, garlic, onions, head lettuce ....they are all too difficult for them to digest.
1-2	Don't	_	_	_	_	_	_	_	_
1	Do	do	AUX	VB	Mood=Imp|VerbForm=Fin	3	aux	3:aux	_
2	n't	not	PART	RB	_	3	advmod	3:advmod	_
3	feed	feed	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	0:root	_
4	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	3	iobj	3:iobj	_
5	broccoli	broccoli	NOUN	NN	Number=Sing	3	obj	3:obj	SpaceAfter=No
6	,	,	PUNCT	,	_	5	punct	5:punct	_
7	cauliflower	cauliflower	NOUN	NN	Number=Sing	5	appos	5:appos	SpaceAfter=No
8	,	,	PUNCT	,	_	5	punct	5:punct	_
9	garlic	garlic	NOUN	NN	Number=Sing	5	appos	5:appos	SpaceAfter=No
10	,	,	PUNCT	,	_	5	punct	5:punct	_
11	onions	onion	NOUN	NNS	Number=Plur	5	appos	5:appos	SpaceAfter=No
12	,	,	PUNCT	,	_	5	punct	5:punct	_
13	head	head	NOUN	NN	Number=Sing	14	compound	14:compound	_
14	lettuce	lettuce	NOUN	NN	Number=Sing	5	appos	5:appos	_
15	....	....	PUNCT	,	_	3	punct	3:punct	SpaceAfter=No
16	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	20	nsubj	20:nsubj	_
17	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	20	cop	20:cop	_
18	all	all	ADV	RB	_	20	advmod	20:advmod	_
19	too	too	ADV	RB	_	20	advmod	20:advmod	_
20	difficult	difficult	ADJ	JJ	Degree=Pos	3	parataxis	3:parataxis	_
21	for	for	SCONJ	IN	_	24	mark	24:mark	_
22	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	24	nsubj	24:nsubj	_
23	to	to	PART	TO	_	24	mark	24:mark	_
24	digest	digest	VERB	VB	VerbForm=Inf	20	ccomp	20:ccomp	SpaceAfter=No
25	.	.	PUNCT	.	_	3	punct	3:punct	_
