Subject	convection
Predicate	take
Object	place in the mantle
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9232
Neighborhood Sigma	0.9232
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source convection take place in the mantle 2 Google Autocomplete, Answers.com Questions