Assertion: rotary lawn mower | /r/CapableOf | use impeller
Facets:
value: to drive air
type: PURPOSE
value: above the spinning blades
type: LOCATION
Source sentences:
text: Hover mowers are powered rotary push lawn mowers that use an impeller above the spinning blades to drive air downward, thereby creating an air cushion that lifts the mower above the ground.