context: We doubt that Julius is green. It is probable that Brian is a rhino. We believe that Mary moved to the garden. It is unlikely that if Mary moved to the garden, and Julius is green, then Lily is a swan. We doubt that if either Brian is a rhino, or Julius is green, then Fred dropped the apple. It is almost certain that if Brian is a rhino, or Mary moved to the garden, then Greg is a frog.
hypothesis: It is impossible that fred dropped the apple, and Lily is a swan.
valid_hypothesis: It is impossible that fred dropped the apple, and Lily is a swan.
invalid_hypothesis: It is highly likely that fred dropped the apple, and Lily is a swan.
hypothesis_assertion: Fred dropped the apple, and Lily is a swan.