context: It is impossible that Bernhard is a lion. There is almost no chance that Brian is yellow. It is highly unlikely that Greg is white.
hypothesis: It is certain that brian is yellow, or Greg is white.
valid_hypothesis: It is highly unlikely that brian is yellow, or Greg is white.
invalid_hypothesis: It is certain that brian is yellow, or Greg is white.
hypothesis_assertion: Brian is yellow, or Greg is white.