Question: What is the second film in the Vengeance Trilogy based on?
Sentence (from "The Vengeance Trilogy"): The Vengeance Trilogy (Korean: 복수 삼부작 ) is a series of three films, "Sympathy for Mr. Vengeance" (2002), "Oldboy" (2003), and "Lady Vengeance" (2005), directed by South Korean filmmaker Park Chan-wook.
Relevant evidence: Yes