Subject	methane ga
Predicate	be produced at
Object	landfills
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9820
Neighborhood Sigma	0.9857
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source methane gas is produced at landfills 4 Google Autocomplete, Answers.com Questions