Subject	keystone species
Predicate	affect
Object	biodiversity
Modality	Modality Occurrences TBC[biodiversity of ecosystem] 3
Polarity	POSITIVE
Plausibility	0.9106
Neighborhood Sigma	0.9520
Local Sigma	0.9210
Example Sentences	Sentence Occurrences Source keystone species affect biodiversity 14 Google Autocomplete a keystone species affect the biodiversity of an ecosystem 3 Google Autocomplete