context: We doubt that Brian is a rhino. It is almost certain that Mary went to the park. It is improbable that Greg is gray. It is improbable that if Brian is a rhino, or Mary went to the park, then Bernhard is gray. Chances are slight that if Greg is gray, and Brian is a rhino, then Daniel took the football. We believe that if either Greg is gray, or Mary went to the park, then John moved to the office.
hypothesis: There is almost no chance that brian is a rhino, and Greg is gray.
valid_hypothesis: There is almost no chance that brian is a rhino, and Greg is gray.
invalid_hypothesis: It is almost certain that brian is a rhino, and Greg is gray.
hypothesis_assertion: Brian is a rhino, and Greg is gray.