context: Chances are slight that Brian is a lion. We doubt that Bill left the apple. Chances are about even that Greg is a rhino.
hypothesis: Chances are slight that bill left the apple, and Greg is a rhino.
valid_hypothesis: Chances are slight that bill left the apple, and Greg is a rhino.
invalid_hypothesis: It is probable that bill left the apple, and Greg is a rhino.
hypothesis_assertion: Bill left the apple, and Greg is a rhino.