Subject	plate tectonics
Predicate	explain
Object	the formation of metamorphic rocks
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9827
Neighborhood Sigma	0.9856
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source plate tectonics explain the formation of metamorphic rocks 4 Google Autocomplete, Yahoo Questions, Answers.com Questions