context: It is highly unlikely that Brian is a swan. It is highly likely that Sandra took the milk. We believe that Julius is white. It is almost certain that if Julius is white, and Brian is a swan, then Greg is yellow. It is probably not the case that if either Sandra took the milk, or Brian is a swan, then Bernhard is green. We believe that if Julius is white, and Brian is a swan, then Lily is a frog.
hypothesis: It is highly likely that either Bernhard is green, or Lily is a frog.
valid_hypothesis: It is probably not the case that either Bernhard is green, or Lily is a frog.
invalid_hypothesis: It is highly likely that either Bernhard is green, or Lily is a frog.
hypothesis_assertion: Either Bernhard is green, or Lily is a frog.