context: It is highly unlikely that Greg is yellow. It is highly unlikely that Jeff discarded the milk. It is improbable that Brian is gray. We doubt that if Jeff discarded the milk, and Brian is gray, then Julius is a swan. It is likely that if Brian is gray, and Greg is yellow, then Lily is a frog. It is almost certain that if either Jeff discarded the milk, or Greg is yellow, then Bernhard is white.
hypothesis: It is almost certain that julius is a swan, or Lily is a frog.
valid_hypothesis: It is impossible that julius is a swan, or Lily is a frog.
invalid_hypothesis: It is almost certain that julius is a swan, or Lily is a frog.
hypothesis_assertion: Julius is a swan, or Lily is a frog.