context: It is highly likely that Bernhard is gray. It is impossible that Brian is yellow. Chances are slight that Greg is green.
hypothesis: It is probably the case that brian is yellow, or Greg is green.
valid_hypothesis: Chances are slight that brian is yellow, or Greg is green.
invalid_hypothesis: It is probably the case that brian is yellow, or Greg is green.
hypothesis_assertion: Brian is yellow, or Greg is green.