Assertion: ball | /r/HasProperty | spherical
Facets:
value: perfectly
type: DEGREE
Source sentences:
text: It was impossible to produce a ball that was perfectly spherical; children usually made their own balls by inflating pig's bladders and heating them in the ashes of a fire to make them rounder, although Plato (fl.
text: The ball is spherical, weighs between 9 and 10 ounces (255 and 283 g), and is 25 to 27 inches (64 to 69 cm) in circumference (the same size as a regular volleyball).
text: The ball must also have the basic properties of a spherically symmetrical ball, generally meaning that the ball itself must be spherical and must have a symmetrical arrangement of dimples on its surface.