Subject	sea floor
Predicate	spread piece in
Object	support of plate tectonics
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.0013
Neighborhood Sigma	0.0020
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source sea floor is spreading an important piece of evidence in support of plate tectonics 1 Answers.com Questions