Subject	green roof
Predicate	reduce
Object	carbon dioxide
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7953
Neighborhood Sigma	0.8162
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source green roofs reduce carbon dioxide 6 Google Autocomplete a green roof reduce carbon dioxide 7 Google Autocomplete