This would be necessary to keep safety standards at the level they were in northern regions previously.
1	This	this	PRON	PD	Number=Sing|PronType=Dem	4	nsubj	_	_
2	would	will	AUX	VM	Mood=Ind|Person=3|Tense=Past|VerbForm=Fin	4	aux	_	_
3	be	be	AUX	V	VerbForm=Inf	4	cop	_	_
4	necessary	necessary	ADJ	A	Degree=Pos	0	root	_	_
5	to	to	PART	PART	_	6	mark	_	_
6	keep	keep	VERB	V	VerbForm=Inf	4	advcl	_	_
7	safety	safety	NOUN	S	Number=Sing	8	nmod	_	_
8	standards	standard	NOUN	S	Number=Plur	6	obj	_	_
9	at	at	ADP	E	_	11	case	_	_
10	the	the	DET	RD	Definite=Def|PronType=Art	11	det	_	_
11	level	level	NOUN	S	Number=Sing	6	obl	_	_
12	they	they	PRON	PE	Number=Plur|Person=3|PronType=Prs	13	nsubj	_	_
13	were	be	VERB	V	Mood=Ind|Number=Plur|Tense=Past|VerbForm=Fin	11	acl:relcl	_	_
14	in	in	ADP	E	_	16	case	_	_
15	northern	northern	ADJ	A	Degree=Pos	16	amod	_	_
16	regions	region	NOUN	S	Number=Plur	13	obl	_	_
17	previously	previously	ADV	B	_	13	advmod	_	SpaceAfter=No
18	.	.	PUNCT	FS	_	4	punct	_	_
