Subject	barium sulfate
Predicate	be given
Object	to patients before
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.2944
Neighborhood Sigma	0.2944
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source barium sulfate is given to patients before upper and lower gastrointestinal tract x-rays are taken 1 Answers.com Questions