context: There is little chance that Lily is yellow. It is unlikely that Fred is in the bedroom. It is probably not the case that Sandra got the apple. It is unlikely that if Sandra got the apple, and Lily is yellow, then John picked up the milk. There is little chance that if Fred is in the bedroom, and Sandra got the apple, then Julius is a rhino. We believe that if Fred is in the bedroom, or Lily is yellow, then Mary went to the office.
hypothesis: We believe that fred is in the bedroom, and Mary went to the office.
valid_hypothesis: Chances are slight that fred is in the bedroom, and Mary went to the office.
invalid_hypothesis: We believe that fred is in the bedroom, and Mary went to the office.
hypothesis_assertion: Fred is in the bedroom, and Mary went to the office.