Subject	respiratory system
Predicate	be related to
Object	circulatory system
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.0005
Neighborhood Sigma	0.0005
Local Sigma	0.0132
Example Sentences	Sentence Occurrences Source respiratory system and digestive system is related to the circulatory system 1 Answers.com Questions