context: It is highly unlikely that Julius is yellow. There is almost no chance that Greg is gray. There is almost no chance that Bernhard is a lion.
hypothesis: It is impossible that julius is yellow, and Greg is gray.
valid_hypothesis: It is impossible that julius is yellow, and Greg is gray.
invalid_hypothesis: It is likely that julius is yellow, and Greg is gray.
hypothesis_assertion: Julius is yellow, and Greg is gray.