Subject	plankton
Predicate	participate
Object	in the oxygen cycle
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9328
Neighborhood Sigma	0.9330
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source plankton participate in the oxygen cycle 3 Google Autocomplete, Answers.com Questions