Subject	bird
Predicate	fly south for
Object	winter
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9997
Neighborhood Sigma	0.9997
Local Sigma	0.9999
Example Sentences	Sentence Occurrences Source birds fly south for the winter 25 Google Autocomplete, Yahoo Questions, Answers.com Questions, Reddit Questions birds know to fly south for the winter 1 Reddit Questions birds fly south for winter 10 Reddit Questions