Subject	center of gravity
Predicate	help
Object	a tightrope walker
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.3619
Neighborhood Sigma	0.4387
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source center of gravity help a tightrope walker in a circus 1 Answers.com Questions