context: Chances are slight that Mary moved to the office. It is likely that Bill is in the school. It is highly likely that Julius is a rhino. It is almost certain that if either Mary moved to the office, or Julius is a rhino, then Greg is a swan. We doubt that if Mary moved to the office, and Julius is a rhino, then John picked up the milk. It is impossible that if Julius is a rhino, and Bill is in the school, then Lily is white.
hypothesis: It is improbable that either John picked up the milk, or Mary moved to the office.
valid_hypothesis: It is improbable that either John picked up the milk, or Mary moved to the office.
invalid_hypothesis: There is a very good chance that either John picked up the milk, or Mary moved to the office.
hypothesis_assertion: Either John picked up the milk, or Mary moved to the office.