context: It is likely that Julius is gray. We believe that Lily is yellow. It is certain that Brian is a swan.
hypothesis: Chances are slight that brian is a swan, or Lily is yellow.
valid_hypothesis: It is certain that brian is a swan, or Lily is yellow.
invalid_hypothesis: Chances are slight that brian is a swan, or Lily is yellow.
hypothesis_assertion: Brian is a swan, or Lily is yellow.