context: Chances are slight that Mary left the football. We believe that Julius is a lion. It is probably the case that Greg is green.
hypothesis: It is impossible that mary left the football, or Julius is a lion.
valid_hypothesis: We believe that mary left the football, or Julius is a lion.
invalid_hypothesis: It is impossible that mary left the football, or Julius is a lion.
hypothesis_assertion: Mary left the football, or Julius is a lion.