Subject	variation
Predicate	contribute to
Object	selection
Modality	Modality Occurrences TBC[natural selection] 1 TBC[natural selection in environment] 1
Polarity	POSITIVE
Plausibility	0.0090
Neighborhood Sigma	0.0090
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source variation contribute to natural selection 1 Google Autocomplete variation contribute to natural selection in the environment 1 Google Autocomplete