Assertion: sail's edge | /r/CapableOf | extend the sail's shape
Facets:
value: as an airfoil
type: MANNER
Source sentences:
text: The edges may be curved, either to extend the sail's shape as an airfoil or to define its shape in use.
text: The edges may be curved, either to extend the sail's shape as an airfoil or to define its shape in use.