Question: In the movie The Berlin File, Kim Sung-hoon stars as an agent for what country?
Sentence (from "The Berlin File"): Together with his wife, a translator at the North Korean embassy in Berlin played by Jun Ji-hyun, they try to escape being purged, with Ryoo Seung-bum and Han Suk-kyu playing North and South Korean operatives on their trail.
Relevant evidence: No