Subject	catheter
Predicate	be used after
Object	surgery
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.6461
Neighborhood Sigma	0.6572
Local Sigma	0.7287
Example Sentences	Sentence Occurrences Source catheters are used after surgery 2 Google Autocomplete a catheter is used after surgery 2 Google Autocomplete