context: Chances are slight that Mary moved to the office. It is likely that John dropped the milk. It is highly unlikely that Sandra got the football.
hypothesis: We believe that john dropped the milk, or Mary moved to the office.
valid_hypothesis: We believe that john dropped the milk, or Mary moved to the office.
invalid_hypothesis: It is unlikely that john dropped the milk, or Mary moved to the office.
hypothesis_assertion: John dropped the milk, or Mary moved to the office.