context: It is certain that Bernhard is a rhino. Chances are about even that Julius is a swan. It is impossible that John went to the hallway.
hypothesis: Chances are about even that bernhard is a rhino, and Julius is a swan.
valid_hypothesis: Chances are about even that bernhard is a rhino, and Julius is a swan.
invalid_hypothesis: It is impossible that bernhard is a rhino, and Julius is a swan.
hypothesis_assertion: Bernhard is a rhino, and Julius is a swan.