Assertion: modern hovercraft | /r/CapableOf | use propeller
Facets:
value: to create air currents
type: PURPOSE
value: often
type: TEMPORAL
value: on their tops
type: LOCATION
Source sentences:
text: Although modern hovercraft often use propellers on their tops to create air currents that are pushed beneath it, in this activity you used a balloon to create air currents.