Complex sentence: "The Unnatural" was the first episode of the series to be directed by Duchovny, who later directed the seventh season episode "Hollywood A.D." and the ninth season episode "William".
Split into simpler sentences: The Unnatural was also the first episode of the series to be directed by Duchovny. He would later go on to helm the seventh season entry "Hollywood A.D."as well as the ninth season episode "William".