context: There is a better than even chance that Lily is a lion. It is certain that Bernhard is a swan. We doubt that Julius is a rhino. Chances are slight that if Julius is a rhino, or Bernhard is a swan, then Greg is gray. It is improbable that if either Julius is a rhino, or Lily is a lion, then Gertrude is a wolf. It is improbable that if Julius is a rhino, and Bernhard is a swan, then Daniel left the football.
hypothesis: It is probably not the case that julius is a rhino, or Greg is gray.
valid_hypothesis: It is probably not the case that julius is a rhino, or Greg is gray.
invalid_hypothesis: It is highly likely that julius is a rhino, or Greg is gray.
hypothesis_assertion: Julius is a rhino, or Greg is gray.