context: Chances are about even that Mary went to the bedroom. Chances are about even that Brian is gray. It is unlikely that Bernhard is white. There is a better than even chance that if Mary went to the bedroom, and Bernhard is white, then John discarded the apple. It is probably not the case that if Mary went to the bedroom, and Bernhard is white, then Sandra put down the milk. Chances are about even that if either Brian is gray, or Bernhard is white, then Winona is a wolf.
hypothesis: There is almost no chance that either Sandra put down the milk, or Mary went to the bedroom.
valid_hypothesis: Chances are about even that either Sandra put down the milk, or Mary went to the bedroom.
invalid_hypothesis: There is almost no chance that either Sandra put down the milk, or Mary went to the bedroom.
hypothesis_assertion: Either Sandra put down the milk, or Mary went to the bedroom.