Subject	ecosystem
Predicate	has_property
Object	important to the survival of humans
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9213
Neighborhood Sigma	0.9263
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source ecosystems are important to the survival of humans 2 Google Autocomplete, Answers.com Questions