context: It is almost certain that Winona is a cat. We doubt that Lily is gray. Chances are about even that Bernhard is a swan.
hypothesis: Chances are about even that either Bernhard is a swan, or Winona is a cat.
valid_hypothesis: Chances are about even that either Bernhard is a swan, or Winona is a cat.
invalid_hypothesis: It is almost certain that either Bernhard is a swan, or Winona is a cat.
hypothesis_assertion: Either Bernhard is a swan, or Winona is a cat.