context: It is likely that Lily is gray. There is a better than even chance that Mary went to the office. We believe that Brian is a rhino.
hypothesis: There is almost no chance that brian is a rhino, and Mary went to the office.
valid_hypothesis: Chances are about even that brian is a rhino, and Mary went to the office.
invalid_hypothesis: There is almost no chance that brian is a rhino, and Mary went to the office.
hypothesis_assertion: Brian is a rhino, and Mary went to the office.