context: It is certain that Sandra dropped the milk. We believe that Greg is yellow. Chances are about even that Jeff moved to the office.
hypothesis: It is probably not the case that either Sandra dropped the milk, or Greg is yellow.
valid_hypothesis: It is probably not the case that either Sandra dropped the milk, or Greg is yellow.
invalid_hypothesis: It is highly likely that either Sandra dropped the milk, or Greg is yellow.
hypothesis_assertion: Either Sandra dropped the milk, or Greg is yellow.