Some scholars believe that between nine and fifteen thousand years ago, a land bridge existed between Asia and North America that we now call Beringia.
1	Some	some	DET	DT	PronType=Ind	2	det	2:det	Discourse=attribution-positive:11->12:1|Entity=(25-person-new-cf3-2-sgl
2	scholars	scholar	NOUN	NNS	Number=Plur	3	nsubj	3:nsubj	Entity=25)
3	believe	believe	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	0:root	_
4	that	that	SCONJ	IN	_	16	mark	16:mark	Discourse=context-background:12->14:2
5	between	between	ADP	IN	_	6	case	6:case	_
6	nine	nine	NUM	CD	NumForm=Word|NumType=Card	9	compound	9:compound	Entity=(26-time-new-cf6-5-sgl|XML=<date notBefore:::"-13000" notAfter:::"-7000">
7	and	and	CCONJ	CC	_	8	cc	8:cc	_
8	fifteen	fifteen	NUM	CD	NumForm=Word|NumType=Card	6	conj	6:conj:and|9:compound	_
9	thousand	thousand	NUM	CD	NumForm=Word|NumType=Card	10	nummod	10:nummod	_
10	years	year	NOUN	NNS	Number=Plur	11	obl:tmod	11:obl:tmod	Entity=26)
11	ago	ago	ADV	RB	Degree=Pos	16	advmod	16:advmod	SpaceAfter=No|XML=</date>
12	,	,	PUNCT	,	_	11	punct	11:punct	_
13	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	15:det	Entity=(27-place-new-cf1-4,8,9-disc-Bering_Strait
14	land	land	NOUN	NN	Number=Sing	15	compound	15:compound	_
15	bridge	bridge	NOUN	NN	Number=Sing	16	nsubj	16:nsubj|25:obj	_
16	existed	exist	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	3	ccomp	3:ccomp	_
17	between	between	ADP	IN	_	18	case	18:case	_
18	Asia	Asia	PROPN	NNP	Number=Sing	16	obl	16:obl:between	Entity=(28-place-new-cf4-1-coref-Asia)
19	and	and	CCONJ	CC	_	21	cc	21:cc	_
20	North	North	PROPN	NNP	Number=Sing	21	compound	21:compound	Entity=(29-place-new-cf5-1,2-coref-North_America
21	America	America	PROPN	NNP	Number=Sing	18	conj	16:obl:between|18:conj:and	Entity=29)
22	that	that	PRON	WDT	PronType=Rel	25	obj	15:ref	Discourse=elaboration-attribute:13->12:0
23	we	we	PRON	PRP	Case=Nom|Number=Plur|Person=1|PronType=Prs	25	nsubj	25:nsubj	Entity=(30-person-acc:com-cf2-1-sgl)
24	now	now	ADV	RB	_	25	advmod	25:advmod	_
25	call	call	VERB	VBP	Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin	15	acl:relcl	15:acl:relcl	_
26	Beringia	Beringia	PROPN	NNP	Number=Sing	25	xcomp	25:xcomp	Entity=(27-place-giv:act-cf1-1-coref-Bering_Strait)27)|SpaceAfter=No|XML=<hi rend:::"bold"></hi>
27	.	.	PUNCT	.	_	3	punct	3:punct	_
