context: It is almost certain that Brian is yellow. There is a very good chance that Bill dropped the apple. It is unlikely that Fred moved to the office.
hypothesis: It is probable that either Brian is yellow, or Bill dropped the apple.
valid_hypothesis: It is probably not the case that either Brian is yellow, or Bill dropped the apple.
invalid_hypothesis: It is probable that either Brian is yellow, or Bill dropped the apple.
hypothesis_assertion: Either Brian is yellow, or Bill dropped the apple.