Subject	concave lens
Predicate	has_property
Object	zero
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.6129
Neighborhood Sigma	0.6130
Local Sigma	0.6129
Example Sentences	Sentence Occurrences Source concave lenses are zero 2 Google Autocomplete a concave lens is zero 2 Google Autocomplete