context: Chances are slight that Brian is white. There is a very good chance that Emily is a wolf. There is almost no chance that John went to the hallway. There is a better than even chance that if Brian is white, or Emily is a wolf, then Julius is a rhino. There is a better than even chance that if Brian is white, and John went to the hallway, then Greg is gray. There is almost no chance that if Brian is white, or John went to the hallway, then Bernhard is a lion.
hypothesis: It is certain that greg is gray, and Emily is a wolf.
valid_hypothesis: It is impossible that greg is gray, and Emily is a wolf.
invalid_hypothesis: It is certain that greg is gray, and Emily is a wolf.
hypothesis_assertion: Greg is gray, and Emily is a wolf.