context: It is impossible that Greg is a rhino. There is little chance that Mary picked up the milk. It is probable that Brian is yellow. There is little chance that if either Brian is yellow, or Mary picked up the milk, then Winona is a wolf. It is highly unlikely that if Brian is yellow, and Greg is a rhino, then Bernhard is white. It is almost certain that if Greg is a rhino, and Mary picked up the milk, then Julius is a frog.
hypothesis: It is impossible that brian is yellow, and Bernhard is white.
valid_hypothesis: It is impossible that brian is yellow, and Bernhard is white.
invalid_hypothesis: There is a very good chance that brian is yellow, and Bernhard is white.
hypothesis_assertion: Brian is yellow, and Bernhard is white.