Assertion: ufo | /r/ObjectUse | used for object
Facets:
value: by air-traffic-controllers
type: OTHER
value: on radar
type: LOCATION
value: by the military
type: OTHER
value: many times
type: TEMPORAL
Source sentences:
text: UFO has been used many times for simply objects on radar by the military or air-traffic-controllers that - temporarily or not - are not identified.