Subject	volcano
Predicate	can be
Object	a destructive force
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.5331
Neighborhood Sigma	0.5331
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source volcanoes can be both a constructive and a destructive force 1 Answers.com Questions