Subject	seismic wave
Predicate	help
Object	scientists understand the layers of the earth
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.8868
Neighborhood Sigma	0.8929
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source seismic waves help scientists understand the layers of the earth 1 Google Autocomplete