TASK DEFINITION: Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
PROBLEM: Context : NGC 6886 is a planetary nebula in the constellation Sagitta.
Answer : Sagitta

SOLUTION: In which constellation is NGC 6886?

PROBLEM: Context : Karl Emil Schafer (17 December 1891 -- 5 June 1917) was a German pilot during World War I; he became one of the major German flying aces of the war, with 30 confirmed aerial victories.
Answer : World War I

SOLUTION: What was the war that Karl Emil Schafer fought in?

PROBLEM: Context : S/Y Joy (Swedish: S/Y Gladjen) is a 1989 Swedish drama film directed by Goran du Rees, made after the book by Inger Alfven.
Answer : Goran du Rees

SOLUTION:
Who had the role of director in S/Y Joy?