premise: National Security is a 2003 action comedy film, directed by Dennis Dugan, starring Martin Lawrence and Steve Zahn. In addition to Lawrence and Zahn, "National Security" boasts an additional cast of Bill Duke, Eric Roberts, Colm Feore, Matt McCoy, and others.
hypothesis: National Security was not directed by Duke and was not released in the 20th century.
reason: National Security was directed by Dugan (not Duke) and it was released in 2003, therefore the statement that it was not directed by Duke and it was not released in the 20th century is definitely correct. I was hoping that the system would get confused by the negative sentence.