Subject	airplane seat
Predicate	has_trait
Object	upright
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9105
Neighborhood Sigma	0.9105
Local Sigma	0.9105
Example Sentences	Sentence Occurrences Source airplane seats have to be upright 11 Google Autocomplete airplane seats have to be upright when landing 2 Yahoo Questions