Subject	battery
Predicate	be replaced in
Object	6 months
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.0063
Neighborhood Sigma	0.0063
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source batteries in smoke detectors have to be replaced in 6 months 1 Answers.com Questions