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 : Vizefeldwebel Oskar Hennrich was a German World War I flying ace credited with 20 aerial victories. 
Answer : World War I

SOLUTION: In which war did Oskar Hennrich fought?

PROBLEM: Context : However, the legislation did not came into effect until August 1838, and Thomas Pringle was unable to witness this moment; he had died from tuberculosis in December 1834 at the age of 45. 
Answer : tuberculosis

SOLUTION: What disease was a factor in the death of Thomas Pringle?

PROBLEM: Context : The 2008 Macedonian Armed Forces Mil Mi-17 crash occurred on Saturday, 12 January 2008, when a Mil Mi-17 transport helicopter belonging to the Armed Forces of the Republic of Macedonia, crashed 50--100 metres from the village of Blace, situated in the region of Katlanovo, approximately 10--15 kilometres south-east of Skopje, Republic of Macedonia due to low visibility caused by heavy fog. 
Answer : 12 January 2008

SOLUTION:
The point in time of 2008 Macedonian Armed Forces Mil Mi-17 crash was when?