Assertion: electric powered helicopter | /r/CapableOf | become popular
Facets:
value: very
type: DEGREE
Source sentences:
text: Larger electric helicopters suitable for outdoor flight and advanced aerobatics have become a reality over the last few years and have become very popular.
text: Larger electric helicopters suitable for outdoor flight and advanced aerobatics have become a reality over the last few years and have become very popular.