Assertion: ufo | /r/HasProperty | jet
Facets:
Source sentences:
text: We couldn't prove the UFO's were the jets, but neither could we prove they weren't.
text: The Montana Movie was rejected by the panel as positive proof because even though the two observers said that the jets were in another part of the sky when they saw the UFO's and our study backed them up, there was still a chance that the two UFO's could have been the two jets.