Question: Who was the director of a movie where Oh Jung-se played an onscreen supporting role?
Sentence (from "Oh Jung-se"): Oh began his career in theater, and has since appeared in many onscreen supporting roles over the years, notably in "Petty Romance" (2010), "Couples" (2011), "As One" (2012), "A Millionaire On the Run" (2012), and "Running Man" (2013).
Relevant evidence: Yes