context: It is probably not the case that John moved to the office. There is a very good chance that Greg is white. Chances are slight that Brian is yellow.
hypothesis: It is almost certain that brian is yellow, and John moved to the office.
valid_hypothesis: There is almost no chance that brian is yellow, and John moved to the office.
invalid_hypothesis: It is almost certain that brian is yellow, and John moved to the office.
hypothesis_assertion: Brian is yellow, and John moved to the office.