I have thus proposed that the frost rating be lowered to -40° C.
1	I	I	PRON	PE	Number=Sing|Person=1|PronType=Prs	4	nsubj	_	_
2	have	have	AUX	VA	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	4	aux	_	_
3	thus	thus	ADV	B	_	4	advmod	_	_
4	proposed	propose	VERB	V	Tense=Past|VerbForm=Part	0	root	_	_
5	that	that	SCONJ	CS	_	10	mark	_	_
6	the	the	DET	RD	Definite=Def|PronType=Art	8	det	_	_
7	frost	frost	NOUN	S	Number=Sing	8	nmod	_	_
8	rating	rating	NOUN	S	Number=Sing	10	nsubj:pass	_	_
9	be	be	AUX	VA	Mood=Sub|Person=3|Tense=Pres|VerbForm=Fin	10	aux:pass	_	_
10	lowered	lower	VERB	V	Tense=Past|VerbForm=Part	4	ccomp	_	_
11	to	to	ADP	E	_	13	case	_	_
12	-40°	-40°	NUM	N	NumType=Card	13	nummod	_	_
13	C	C	PROPN	SP	_	10	obl	_	SpaceAfter=No
14	.	.	PUNCT	FS	_	4	punct	_	_
