Subject	scientist
Predicate	study
Object	tornadoes
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9625
Neighborhood Sigma	0.9626
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source scientists study tornadoes 6 Google Autocomplete, Answers.com Questions scientists predict and study tornadoes 2 Answers.com Questions