Subject	u-boat
Predicate	be
Object	important to the german navy during world war 1
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.3873
Neighborhood Sigma	0.4406
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source u-boats were important to the german navy during world war 1 1 Answers.com Questions