Subject	tropical rain forest
Predicate	contain
Object	more than half of the worlds species
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.6477
Neighborhood Sigma	0.6794
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source tropical rain forests contain more than half of the worlds species 1 Answers.com Questions