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.
Input: Context : Based on the 1932 memoir I Was a Spy by Marthe Cnockaert, the film is about a Belgian woman who nurses injured German soldiers during World War I while passing intelligence to the British. 
Answer : Marthe Cnockaert
Output:
The I Was a Spy is based upon what?