Subject	pebble
Predicate	become
Object	rounded
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9712
Neighborhood Sigma	0.9875
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source pebbles become smooth and rounded 6 Google Autocomplete, Answers.com Questions pebbles on the seashore become smooth and rounded 2 Google Autocomplete