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 : Real Steel is a 2011 American science fiction sports drama film starring Hugh Jackman and Dakota Goyo, co-produced and directed by Shawn Levy for DreamWorks Pictures. 
Answer : DreamWorks

SOLUTION: What production company or companies created Real Steel?

PROBLEM: Context : Matthias Billen (29 March 1910 -- 1 July 1989) was a German international footballer. 
Answer : 1 July 1989

SOLUTION: When did Matthias Billen's death occur?

PROBLEM: Context : F 13 Norrköping, Bråvalla Flygflottilj, Bråvalla Air Force Wing, or simply ``F 13'', is a former Flygvapnet - Swedish Air Force - wing with the main base located near Norrköping in south-eastern Sweden. 
Answer : Swedish Air Force

SOLUTION:
What military branch did F 13 Norrköping belong to?