Assertion: ufo | /r/HasProperty | apparent object
Facets:
value: in its strictest definition
type: OTHER
value: in the sky
type: LOCATION
Source sentences:
text: An unidentified flying object, or UFO, is in its strictest definition any apparent object in the sky that is not identifiable as a known object or phenomenon.
text: An unidentified flying object, or UFO, is any apparent flying object which cannot be identified by the observer and which remains unidentified after investigation.