context: It is impossible that Julius is white. It is impossible that Greg is gray. It is impossible that Antoine is thirsty. It is unlikely that if Antoine is thirsty, or Greg is gray, then Brian is a rhino. It is certain that if Julius is white, or Greg is gray, then Bernhard is yellow. Chances are slight that if either Greg is gray, or Antoine is thirsty, then Mary went to the hallway.
hypothesis: It is impossible that antoine is thirsty, and Brian is a rhino.
valid_hypothesis: It is impossible that antoine is thirsty, and Brian is a rhino.
invalid_hypothesis: It is probable that antoine is thirsty, and Brian is a rhino.
hypothesis_assertion: Antoine is thirsty, and Brian is a rhino.