context: It is probable that Jeff discarded the milk. It is likely that Greg is a swan. It is almost certain that Lily is a lion. There is a very good chance that if either Jeff discarded the milk, or Lily is a lion, then Bernhard is a frog. We believe that if Jeff discarded the milk, and Lily is a lion, then Brian is a rhino. It is improbable that if Jeff discarded the milk, and Greg is a swan, then John went to the bedroom.
hypothesis: There is little chance that brian is a rhino, or Lily is a lion.
valid_hypothesis: It is almost certain that brian is a rhino, or Lily is a lion.
invalid_hypothesis: There is little chance that brian is a rhino, or Lily is a lion.
hypothesis_assertion: Brian is a rhino, or Lily is a lion.