Task: Explanation
Input (English): The Twins Effect, also known as Vampire Effect in the United States, is a 2003 Hong Kong film directed by Dante Lam and Donnie Yen. The film was derived from Cantopop group Twins, starring both members Charlene Choi and Gillian Chung in the leading roles. Co-stars include Edison Chen and Ekin Cheng. Jackie Chan makes a Question: What Hong Kong singer and actress was born Chung Dik-san and starred in The Twins Effect? Answer: Gillian Chung
Output (English):  The film was derived from Cantopop group Twins, starring both members Charlene Choi and Gillian Chung in the leading roles.