Subject	front
Predicate	cause
Object	clouds
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9904
Neighborhood Sigma	0.9904
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source fronts cause clouds 4 Google Autocomplete fronts cause clouds and precipitation 4 Google Autocomplete, Answers.com Questions