context: It is impossible that Mary left the milk. We believe that Bill dropped the apple. It is highly unlikely that Lily is a rhino.
hypothesis: It is impossible that mary left the milk, and Lily is a rhino.
valid_hypothesis: It is impossible that mary left the milk, and Lily is a rhino.
invalid_hypothesis: There is a very good chance that mary left the milk, and Lily is a rhino.
hypothesis_assertion: Mary left the milk, and Lily is a rhino.