Subject	oxygen tank
Predicate	have
Object	expiration date
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9070
Neighborhood Sigma	1.0000
Local Sigma	0.9071
Example Sentences	Sentence Occurrences Source oxygen tanks have expiration date 6 Google Autocomplete oxygen tanks have an expiration date 2 Answers.com Questions