context: It is improbable that Bernhard is gray. It is unlikely that Lily is a rhino. There is little chance that Gertrude is a wolf. It is highly unlikely that if Bernhard is gray, and Gertrude is a wolf, then Greg is green. It is impossible that if either Gertrude is a wolf, or Bernhard is gray, then Brian is a frog. We believe that if either Lily is a rhino, or Gertrude is a wolf, then John went to the hallway.
hypothesis: There is almost no chance that gertrude is a wolf, and Lily is a rhino.
valid_hypothesis: There is almost no chance that gertrude is a wolf, and Lily is a rhino.
invalid_hypothesis: It is probably the case that gertrude is a wolf, and Lily is a rhino.
hypothesis_assertion: Gertrude is a wolf, and Lily is a rhino.