Assertion: helicopter | /r/AtLocation | one place
Facets:
value: above the ground
type: LOCATION
Source sentences:
text: An airplane must move forward to stay in the air, but because the helicopter's rotor blades are always moving, the helicopter can stop and stay in one place above the ground.
text: An airplane must move forward to stay in the air, but because the helicopter's rotor blades are always moving, the helicopter can stop and stay in one place above the ground.