context: It is impossible that Mary went to the hallway. Chances are slight that Gertrude is a wolf. We doubt that Brian is gray.
hypothesis: It is certain that brian is gray, and Mary went to the hallway.
valid_hypothesis: It is impossible that brian is gray, and Mary went to the hallway.
invalid_hypothesis: It is certain that brian is gray, and Mary went to the hallway.
hypothesis_assertion: Brian is gray, and Mary went to the hallway.