Subject	gas
Predicate	exert
Object	a pressure on the insides of a container
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.8222
Neighborhood Sigma	0.8222
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source gases exert a pressure on the insides of a container 1 Answers.com Questions