Subject	natural gas
Predicate	be used for
Object	heating
Modality	Modality Occurrences TBC[central heating] 2
Polarity	POSITIVE
Plausibility	0.9828
Neighborhood Sigma	0.9829
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source natural gas is used for central heating 2 Google Autocomplete natural gas is used for heating 2 Answers.com Questions