context: Chances are slight that Brian is white. It is highly likely that Bill went to the office. It is probably not the case that Julius is a rhino.
hypothesis: It is probable that brian is white, or Julius is a rhino.
valid_hypothesis: It is probably not the case that brian is white, or Julius is a rhino.
invalid_hypothesis: It is probable that brian is white, or Julius is a rhino.
hypothesis_assertion: Brian is white, or Julius is a rhino.