context: There is a very good chance that Fred is in the school. There is almost no chance that Jessica is a mouse. We believe that Bernhard is yellow. There is little chance that if Fred is in the school, and Jessica is a mouse, then Julius is white. It is likely that if Bernhard is yellow, or Jessica is a mouse, then Greg is yellow. We doubt that if Jessica is a mouse, and Bernhard is yellow, then Sandra left the football.
hypothesis: It is impossible that fred is in the school, and Bernhard is yellow.
valid_hypothesis: There is a better than even chance that fred is in the school, and Bernhard is yellow.
invalid_hypothesis: It is impossible that fred is in the school, and Bernhard is yellow.
hypothesis_assertion: Fred is in the school, and Bernhard is yellow.