context: Chances are about even that John went to the office. We believe that Bernhard is a rhino. Chances are slight that Brian is white.
hypothesis: It is probably not the case that john went to the office, and Bernhard is a rhino.
valid_hypothesis: It is probably not the case that john went to the office, and Bernhard is a rhino.
invalid_hypothesis: We believe that john went to the office, and Bernhard is a rhino.
hypothesis_assertion: John went to the office, and Bernhard is a rhino.