Question: Who directed a historical film starring Yoo Seung-ho, about a South Korean period fantasy?
Sentence (from "Warrior Baek Dong-soo"): Warrior Baek Dong-soo () is a 2011 South Korean fusion historical/action television series starring Ji Chang-wook in the title role, with Yoo Seung-ho, Yoon So-yi, Shin Hyun-bin, Choi Min-soo and Jun Kwang-ryul.
Relevant evidence: No