context: It is probably the case that Lily is gray. It is probably not the case that Julius is a rhino. It is unlikely that Bernhard is white.
hypothesis: It is certain that julius is a rhino, or Bernhard is white.
valid_hypothesis: Chances are about even that julius is a rhino, or Bernhard is white.
invalid_hypothesis: It is certain that julius is a rhino, or Bernhard is white.
hypothesis_assertion: Julius is a rhino, or Bernhard is white.