context: It is unlikely that Greg is green. It is certain that Fred is in the bedroom. It is impossible that Brian is a swan. We believe that if Fred is in the bedroom, or Brian is a swan, then Sumit is bored. Chances are slight that if either Brian is a swan, or Fred is in the bedroom, then Lily is green. It is probable that if Greg is green, or Brian is a swan, then Julius is a rhino.
hypothesis: We believe that julius is a rhino, or Lily is green.
valid_hypothesis: It is probably not the case that julius is a rhino, or Lily is green.
invalid_hypothesis: We believe that julius is a rhino, or Lily is green.
hypothesis_assertion: Julius is a rhino, or Lily is green.