context: It is certain that Mary picked up the milk. It is probably not the case that Lily is gray. We believe that Sandra got the apple. It is highly unlikely that if Sandra got the apple, and Mary picked up the milk, then Jessica is a cat. There is a very good chance that if Sandra got the apple, and Mary picked up the milk, then John moved to the office. Chances are slight that if either Lily is gray, or Mary picked up the milk, then Daniel left the milk.
hypothesis: There is little chance that daniel left the milk, and Mary picked up the milk.
valid_hypothesis: There is little chance that daniel left the milk, and Mary picked up the milk.
invalid_hypothesis: It is likely that daniel left the milk, and Mary picked up the milk.
hypothesis_assertion: Daniel left the milk, and Mary picked up the milk.