Subject	most volcano
Predicate	form at
Object	plate boundaries
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9738
Neighborhood Sigma	0.9738
Local Sigma	0.9778
Example Sentences	Sentence Occurrences Source most volcanoes form at plate boundaries 11 Google Autocomplete, Answers.com Questions most volcanoes and earthquakes form at plate boundaries 1 Google Autocomplete