Subject	stream
Predicate	add to
Object	volume of river
Modality	Modality Occurrences some[subj/a tributary] 1
Polarity	POSITIVE
Plausibility	0.0013
Neighborhood Sigma	0.0013
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source a tributary stream add to the volume of a river 1 Answers.com Questions