Then the need to be mature, that is, old enough, and big enough to breed.
1	Then	then	ADV	RB	PronType=Dem	3	advmod	3:advmod	_
2	the	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs|Typo=Yes	3	nsubj	3:nsubj	CorrectForm=they
3	need	need	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
4	to	to	PART	TO	_	6	mark	6:mark	_
5	be	be	AUX	VB	VerbForm=Inf	6	cop	6:cop	_
6	mature	mature	ADJ	JJ	Degree=Pos	3	advcl	3:advcl:to	SpaceAfter=No
7	,	,	PUNCT	,	_	6	punct	6:punct	_
8	that	that	ADV	RB	_	11	advmod	11:advmod	_
9	is	is	ADV	RB	_	8	fixed	8:fixed	SpaceAfter=No
10	,	,	PUNCT	,	_	11	punct	11:punct	_
11	old	old	ADJ	JJ	Degree=Pos	6	appos	6:appos	_
12	enough	enough	ADV	RB	_	11	advmod	11:advmod	SpaceAfter=No
13	,	,	PUNCT	,	_	15	punct	15:punct	_
14	and	and	CCONJ	CC	_	15	cc	15:cc	_
15	big	big	ADJ	JJ	Degree=Pos	6	conj	3:advcl:to|6:conj:and	_
16	enough	enough	ADV	RB	_	15	advmod	15:advmod	_
17	to	to	PART	TO	_	18	mark	18:mark	_
18	breed	breed	VERB	VB	VerbForm=Inf	16	advcl	16:advcl:to	SpaceAfter=No
19	.	.	PUNCT	.	_	3	punct	3:punct	_
