context: We believe that Brian is gray. It is unlikely that Bernhard is a swan. We doubt that Gertrude is a mouse. It is almost certain that if Brian is gray, or Bernhard is a swan, then John went to the office. We believe that if Bernhard is a swan, or Gertrude is a mouse, then Julius is a lion. There is little chance that if Bernhard is a swan, and Brian is gray, then Lily is a rhino.
hypothesis: There is a very good chance that gertrude is a mouse, or Brian is gray.
valid_hypothesis: There is a very good chance that gertrude is a mouse, or Brian is gray.
invalid_hypothesis: Chances are slight that gertrude is a mouse, or Brian is gray.
hypothesis_assertion: Gertrude is a mouse, or Brian is gray.