Assertion: semicircle's diameter | /r/HasProperty | twice the radius
Facets:
Source sentences:
text: The diameter of the semicircle will be twice the radius.
text: 2r (since the line must pass through the center of the circle, it must be the diameter, the diameter is twice the radius, hence diameter = 2r)
text: Since the diameter is twice the radius, the "missing" part of the diameter is (2r − x) in length.