context: It is probably not the case that Greg is gray. It is highly likely that Lily is a swan. There is little chance that Bernhard is white.
hypothesis: Chances are slight that either Lily is a swan, or Bernhard is white.
valid_hypothesis: There is a very good chance that either Lily is a swan, or Bernhard is white.
invalid_hypothesis: Chances are slight that either Lily is a swan, or Bernhard is white.
hypothesis_assertion: Either Lily is a swan, or Bernhard is white.