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.

Q: Context : ISO 3166-2:GL is the entry for Greenland in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Answer : International Organization for Standardization

A: Who set the standards for ISO 3166-2:GL?
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Q: Context : Izak Davel (born 1 July 1983 in South Africa) is a South African actor, singer, dancer and male model. 
Answer : male

A: What gender is Izak Davel?
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Q: Context : Tad J. Oelstrom (born February 14, 1943) is a retired United States Air Force Lieutenant General who now serves as the Director of the National Security Program at the John F. Kennedy School of Government, Harvard University. 
Answer : United States Air Force

A:
With which military branch did Tad J. Oelstrom serve with?
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