context: It is probably not the case that Greg is white. We doubt that Julius is gray. There is little chance that Bernhard is a lion.
hypothesis: We believe that either Julius is gray, or Greg is white.
valid_hypothesis: It is probably not the case that either Julius is gray, or Greg is white.
invalid_hypothesis: We believe that either Julius is gray, or Greg is white.
hypothesis_assertion: Either Julius is gray, or Greg is white.