context: It is improbable that Mary moved to the office. It is likely that Brian is yellow. It is probable that Julius is green.
hypothesis: Chances are about even that either Brian is yellow, or Julius is green.
valid_hypothesis: Chances are about even that either Brian is yellow, or Julius is green.
invalid_hypothesis: It is almost certain that either Brian is yellow, or Julius is green.
hypothesis_assertion: Either Brian is yellow, or Julius is green.