Assertion: ufo | /r/HasProperty | explained
Facets:
value: as being physical spacecraft
type: OTHER
Source sentences:
text: UFOs that can be explained are sometimes termed "IFOs" or Identified Flying Objects.
text: The extraterrestrial hypothesis (ETH) is the hypothesis that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by extraterrestrial life or non-human aliens from other planets visiting Earth.