context: It is impossible that Brian is a lion. We doubt that Bernhard is a swan. Chances are slight that Lily is white. It is probable that if Bernhard is a swan, or Lily is white, then Mary moved to the garden. It is improbable that if Bernhard is a swan, or Brian is a lion, then Fred went to the hallway. It is highly unlikely that if either Bernhard is a swan, or Brian is a lion, then Sumit is bored.
hypothesis: We believe that lily is white, or Fred went to the hallway.
valid_hypothesis: Chances are slight that lily is white, or Fred went to the hallway.
invalid_hypothesis: We believe that lily is white, or Fred went to the hallway.
hypothesis_assertion: Lily is white, or Fred went to the hallway.