Subject	ventilator
Predicate	be made
Object	near the roof of a room
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7169
Neighborhood Sigma	0.7950
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source ventilators are made near the roof of a room 2 Google Autocomplete, Answers.com Questions