context: It is impossible that John picked up the milk. It is unlikely that Julius is yellow. We believe that Greg is white. It is highly unlikely that if Julius is yellow, or Greg is white, then Brian is a frog. It is impossible that if either Greg is white, or John picked up the milk, then Fred went to the bedroom. It is unlikely that if either Julius is yellow, or Greg is white, then Sandra left the football.
hypothesis: We doubt that either Fred went to the bedroom, or Julius is yellow.
valid_hypothesis: We doubt that either Fred went to the bedroom, or Julius is yellow.
invalid_hypothesis: It is highly likely that either Fred went to the bedroom, or Julius is yellow.
hypothesis_assertion: Either Fred went to the bedroom, or Julius is yellow.