Subject	sherpa
Predicate	has_property
Object	invaluable to mountaineering teams
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.7991
Neighborhood Sigma	0.7992
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source sherpas are invaluable to mountaineering teams 2 Google Autocomplete, Answers.com Questions