Assertion: boomerang | /r/HasProperty | constructed as flat airfoil
Facets:
value: typically
type: DEGREE
Source sentences:
text: A boomerang is a thrown tool, typically constructed as a flat airfoil, that is designed to spin about an axis perpendicular to the direction of its flight.
text: A boomerang is a thrown tool, typically constructed as a flat airfoil, that is designed to spin about an axis perpendicular to the direction of its flight.