context: It is probably the case that Julius is gray. It is certain that Gertrude is a cat. It is unlikely that Jeff went to the hallway.
hypothesis: Chances are slight that julius is gray, and Jeff went to the hallway.
valid_hypothesis: Chances are slight that julius is gray, and Jeff went to the hallway.
invalid_hypothesis: It is probably the case that julius is gray, and Jeff went to the hallway.
hypothesis_assertion: Julius is gray, and Jeff went to the hallway.