context: There is almost no chance that Mary went to the bedroom. It is almost certain that Brian is green. It is impossible that Lily is yellow. Chances are about even that if Mary went to the bedroom, or Lily is yellow, then Bernhard is a swan. Chances are about even that if Mary went to the bedroom, and Brian is green, then John put down the apple. There is a better than even chance that if either Mary went to the bedroom, or Brian is green, then Julius is a lion.
hypothesis: It is impossible that either Bernhard is a swan, or John put down the apple.
valid_hypothesis: It is impossible that either Bernhard is a swan, or John put down the apple.
invalid_hypothesis: We believe that either Bernhard is a swan, or John put down the apple.
hypothesis_assertion: Either Bernhard is a swan, or John put down the apple.