context: It is improbable that John dropped the apple. Chances are slight that Mary is in the cinema. It is impossible that Julius is a frog. It is probably the case that if John dropped the apple, and Mary is in the cinema, then Lily is a rhino. We believe that if Mary is in the cinema, and John dropped the apple, then Bernhard is a lion. There is a better than even chance that if Julius is a frog, and Mary is in the cinema, then Greg is yellow.
hypothesis: We doubt that either John dropped the apple, or Mary is in the cinema.
valid_hypothesis: We doubt that either John dropped the apple, or Mary is in the cinema.
invalid_hypothesis: It is highly likely that either John dropped the apple, or Mary is in the cinema.
hypothesis_assertion: Either John dropped the apple, or Mary is in the cinema.