context: There is almost no chance that Bernhard is gray. There is a better than even chance that John put down the apple. It is improbable that Mary got the milk. It is certain that if Bernhard is gray, or Mary got the milk, then Fred is in the bedroom. It is certain that if Bernhard is gray, and Mary got the milk, then Brian is green. It is probably not the case that if Bernhard is gray, or John put down the apple, then Greg is a rhino.
hypothesis: It is certain that brian is green, and Bernhard is gray.
valid_hypothesis: It is impossible that brian is green, and Bernhard is gray.
invalid_hypothesis: It is certain that brian is green, and Bernhard is gray.
hypothesis_assertion: Brian is green, and Bernhard is gray.