context: We believe that Sandra grabbed the milk. Chances are slight that Fred moved to the office. It is highly unlikely that John went to the bedroom.
hypothesis: It is probably not the case that either Sandra grabbed the milk, or Fred moved to the office.
valid_hypothesis: It is probable that either Sandra grabbed the milk, or Fred moved to the office.
invalid_hypothesis: It is probably not the case that either Sandra grabbed the milk, or Fred moved to the office.
hypothesis_assertion: Either Sandra grabbed the milk, or Fred moved to the office.