Subject	operation
Predicate	be rolling
Object	thunder
Modality	Modality Occurrences TBC[thunder called] 1
Polarity	POSITIVE
Plausibility	0.0014
Neighborhood Sigma	0.0014
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source operation was rolling thunder an unsuccessful strategy to get north vietnam to submit 1 Answers.com Questions operation was rolling thunder called rolling thunder 1 Answers.com Questions operation was rolling thunder was a failure 1 Answers.com Questions