context: It is likely that Bill put down the milk. It is impossible that Greg is a swan. It is improbable that Julius is a rhino.
hypothesis: It is probably not the case that bill put down the milk, or Greg is a swan.
valid_hypothesis: It is probable that bill put down the milk, or Greg is a swan.
invalid_hypothesis: It is probably not the case that bill put down the milk, or Greg is a swan.
hypothesis_assertion: Bill put down the milk, or Greg is a swan.