Assertion: rc aircraft | /r/HasProperty | useful
Facets:
value: for training anti-aircraft gunners
type: PURPOSE
value: very
type: DEGREE
Source sentences:
text: Denny believed that low-cost RC aircraft would be very useful for training anti-aircraft gunners, and in 1935 he demonstrated a prototype target drone, the RP-1, to the US Army.
text: Denny believed that low-cost RC aircraft would be very useful for training anti-aircraft gunners, and in 1935 he demonstrated a prototype target drone, the RP-1, to the US Army.