context: There is a better than even chance that Mary went to the office. It is likely that John put down the milk. There is almost no chance that Greg is gray. We believe that if Greg is gray, and Mary went to the office, then Sandra got the football. It is highly unlikely that if Mary went to the office, and John put down the milk, then Jessica is a mouse. It is probably not the case that if John put down the milk, and Mary went to the office, then Lily is white.
hypothesis: It is likely that either Jessica is a mouse, or Sandra got the football.
valid_hypothesis: There is almost no chance that either Jessica is a mouse, or Sandra got the football.
invalid_hypothesis: It is likely that either Jessica is a mouse, or Sandra got the football.
hypothesis_assertion: Either Jessica is a mouse, or Sandra got the football.