Subject	nurse shark
Predicate	has_property
Object	keystone species
Modality	Modality Occurrences some[subj/the grey] 1
Polarity	POSITIVE
Plausibility	0.0017
Neighborhood Sigma	0.0020
Local Sigma	0.0020
Example Sentences	Sentence Occurrences Source the grey nurse shark is a keystone species 1 Google Autocomplete