Understand that Newton’s concept of the gravitational force between two massive objects and Einstein’s concept of warped spacetime are different explanations for the same observed accelerations of one massive object in the presence of another massive object
1	Understand	understand	VERB	VB	Mood=Imp|Person=2|VerbForm=Fin	0	root	0:root	Discourse=joint-list_m:5->4:0
2	that	that	SCONJ	IN	_	23	mark	23:mark	_
3-4	Newton’s	_	_	_	_	_	_	_	_
3	Newton	Newton	PROPN	NNP	Number=Sing	5	nmod:poss	5:nmod:poss	Entity=(12-abstract-new-cf1-3,15-coref(13-abstract-new-cf4-3-coref(14-person-new-cf8-1-coref-Isaac_Newton
4	’s	's	PART	POS	_	3	case	3:case	Entity=14)
5	concept	concept	NOUN	NN	Number=Sing	23	nsubj	23:nsubj	_
6	of	of	ADP	IN	_	9	case	9:case	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	Entity=(15-abstract-new-cf5-3-sgl
8	gravitational	gravitational	ADJ	JJ	Degree=Pos	9	amod	9:amod	_
9	force	force	NOUN	NN	Number=Sing	5	nmod	5:nmod:of	_
10	between	between	ADP	IN	_	13	case	13:case	_
11	two	two	NUM	CD	NumForm=Word|NumType=Card	13	nummod	13:nummod	Entity=(16-object-new-cf9-3-sgl
12	massive	massive	ADJ	JJ	Degree=Pos	13	amod	13:amod	_
13	objects	object	NOUN	NNS	Number=Plur	9	nmod	9:nmod:between	Entity=16)15)13)
14	and	and	CCONJ	CC	_	17	cc	17:cc	_
15-16	Einstein’s	_	_	_	_	_	_	_	_
15	Einstein	Einstein	PROPN	NNP	Number=Sing	17	nmod:poss	17:nmod:poss	Entity=(7-abstract-giv:act-cf3-3-coref(8-person-giv:act-cf2*-1-coref-Albert_Einstein
16	’s	's	PART	POS	_	15	case	15:case	Entity=8)
17	concept	concept	NOUN	NN	Number=Sing	5	conj	5:conj:and|23:nsubj	_
18	of	of	ADP	IN	_	20	case	20:case	_
19	warped	warp	VERB	VBN	Tense=Past|VerbForm=Part	20	amod	20:amod	Entity=(17-abstract-new-cf10-2-sgl
20	spacetime	spacetime	NOUN	NN	Number=Sing	17	nmod	17:nmod:of	Entity=17)7)12)
21	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	23	cop	23:cop	_
22	different	different	ADJ	JJ	Degree=Pos	23	amod	23:amod	Entity=(12-abstract-giv:act-cf1-2-coref
23	explanations	explanation	NOUN	NNS	Number=Plur	1	ccomp	1:ccomp	_
24	for	for	ADP	IN	_	28	case	28:case	_
25	the	the	DET	DT	Definite=Def|PronType=Art	28	det	28:det	Entity=(18-abstract-new-cf6-4-sgl
26	same	same	ADJ	JJ	Degree=Pos	28	amod	28:amod	_
27	observed	observe	VERB	VBN	Tense=Past|VerbForm=Part	28	amod	28:amod	_
28	accelerations	acceleration	NOUN	NNS	Number=Plur	23	nmod	23:nmod:for	_
29	of	of	ADP	IN	_	32	case	32:case	_
30	one	one	NUM	CD	NumForm=Word|NumType=Card	32	nummod	32:nummod	Entity=(19-object-new-cf11-3-sgl
31	massive	massive	ADJ	JJ	Degree=Pos	32	amod	32:amod	_
32	object	object	NOUN	NN	Number=Sing	28	nmod	28:nmod:of	Entity=19)
33	in	in	ADP	IN	_	35	case	35:case	_
34	the	the	DET	DT	Definite=Def|PronType=Art	35	det	35:det	Entity=(20-abstract-new-cf7-2-sgl
35	presence	presence	NOUN	NN	Number=Sing	28	nmod	28:nmod:in	_
36	of	of	ADP	IN	_	39	case	39:case	_
37	another	another	DET	DT	PronType=Art	39	det	39:det	Entity=(21-object-new-cf12-3-sgl
38	massive	massive	ADJ	JJ	Degree=Pos	39	amod	39:amod	_
39	object	object	NOUN	NN	Number=Sing	35	nmod	35:nmod:of	Entity=21)20)18)12)
