Question: Which of these Asian directors was behind the science fiction adventure film "Snowpiercer", Bong Joon-ho or Vincent Kok?
Sentence (from "Bong Joon-ho"): His latest film is "Okja" (2017), a South Korean-American film, which competed for the "Palme d'Or" in the main competition section at the 2017 Cannes Film Festival.
Relevant evidence: No