Subject	digestive system
Predicate	be
Object	respiratory system link to circulatory system
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.1003
Neighborhood Sigma	0.1244
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source digestive system is urinary system and respiratory system link to circulatory system 1 Answers.com Questions