context: There is a very good chance that Bill discarded the milk. It is impossible that Mary went to the garden. Chances are slight that Greg is a swan.
hypothesis: We believe that mary went to the garden, and Greg is a swan.
valid_hypothesis: It is impossible that mary went to the garden, and Greg is a swan.
invalid_hypothesis: We believe that mary went to the garden, and Greg is a swan.
hypothesis_assertion: Mary went to the garden, and Greg is a swan.