Given the task definition and input, reply with output. Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Context: Bat Wings (Norwegian: Flaggermusvinger) is a 1992 Norwegian drama film directed by Emil Stang Lund.
Question: Who served as director for Bat Wings?
emil stang lund