Assertion: ultrasound | /r/HasProperty | accurate
Facets:
value: at estimating a baby's size
type: OTHER
value: usually
type: DEGREE
value: relatively
type: DEGREE
Source sentences:
text: What's more, though ultrasounds are usually relatively accurate at estimating a baby's size, they can under- or over-estimate weight, especially if they're overused, which may occasionally result in unnecessary C-sections or premature deliveries.