Subject	carbon monoxide
Predicate	be produced in
Object	car engines
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.8042
Neighborhood Sigma	0.8045
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source carbon monoxide is produced in car engines 6 Google Autocomplete, Answers.com Questions