Subject	sickle cell anemia
Predicate	has_property
Object	an example of natural selection
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.6309
Neighborhood Sigma	0.6415
Local Sigma	0.6509
Example Sentences	Sentence Occurrences Source sickle cell anemia is an example of natural selection 3 Google Autocomplete