context: It is unlikely that Bernhard is a swan. Chances are slight that Julius is a rhino. It is highly likely that Greg is a swan. It is certain that if Julius is a rhino, or Greg is a swan, then Lily is yellow. Chances are slight that if Julius is a rhino, or Bernhard is a swan, then Yann got the milk there. It is highly likely that if Greg is a swan, or Bernhard is a swan, then Brian is a frog.
hypothesis: It is unlikely that either Lily is yellow, or Julius is a rhino.
valid_hypothesis: There is a very good chance that either Lily is yellow, or Julius is a rhino.
invalid_hypothesis: It is unlikely that either Lily is yellow, or Julius is a rhino.
hypothesis_assertion: Either Lily is yellow, or Julius is a rhino.