Assertion: ordinary hang glider | /r/Desires | an area of about
Facets:
value: to get airborne
type: PURPOSE
Source sentences:
text: An ordinary hang glider is used for its wing and control frame, and the pilot can foot-launch from a hill or from flat ground, needing an area of about the size of a football field to get airborne, or much less area if there is an oncoming breeze and an absence of obstacles.