context: It is probably not the case that Julie is in the bedroom. It is probably not the case that John left the football. It is almost certain that Sandra took the football. We believe that if either Julie is in the bedroom, or John left the football, then Mary picked up the apple. It is probably the case that if either Julie is in the bedroom, or John left the football, then Bernhard is a swan. It is certain that if Sandra took the football, or Julie is in the bedroom, then Greg is yellow.
hypothesis: We believe that mary picked up the apple, and John left the football.
valid_hypothesis: Chances are slight that mary picked up the apple, and John left the football.
invalid_hypothesis: We believe that mary picked up the apple, and John left the football.
hypothesis_assertion: Mary picked up the apple, and John left the football.