Assertion: premium grade ball | /r/CapableOf | use non-regular polygons
Facets:
value: to give a closer approximation
type: PURPOSE
Source sentences:
text: Some premium-grade 32-panel balls use non-regular polygons to give a closer approximation to sphericality.
text: Some premium-grade 32-panel balls use non-regular polygons to give a closer approximation to sphericality.