Subject	gravity
Predicate	keep
Object	the moon in orbit around the earth
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9610
Neighborhood Sigma	0.9610
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source gravity keep the moon in orbit around the earth 2 Google Autocomplete, Answers.com Questions gravity keeps the moon in orbit around the earth and the earth in orbit around the sun 1 Answers.com Questions