Subject	scan
Predicate	be done at
Object	20 weeks
Modality	Modality Occurrences some[subj/anomaly] 1
Polarity	POSITIVE
Plausibility	0.0025
Neighborhood Sigma	0.0025
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source anomaly scan is done at 20 weeks 1 Google Autocomplete