Assertion: horizontal stabilizer's elevator | /r/HasProperty | movable airfoil
Facets:
Source sentences:
text: The elevator is a movable airfoil that controls the up-and-down motion of the aircraft's nose.
text: The elevator is a movable aerofoil that controls changes in pitch, the up-and-down motion of the aircraft's nose.
text: The elevator and rudder are both movable surfaces fixed to the trailing edge of the horizontal and vertical stabilizer respectively.