context: Chances are slight that Julius is a lion. It is unlikely that Greg is white. It is unlikely that John went to the kitchen.
hypothesis: It is probably not the case that either John went to the kitchen, or Greg is white.
valid_hypothesis: It is probably not the case that either John went to the kitchen, or Greg is white.
invalid_hypothesis: It is almost certain that either John went to the kitchen, or Greg is white.
hypothesis_assertion: Either John went to the kitchen, or Greg is white.