Subject	gravity
Predicate	keep planets in
Object	solar system in orbits
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.0058
Neighborhood Sigma	0.0058
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source gravity keep planets and other objects in the solar system in orbits 1 Answers.com Questions