Generate a correct and concise answer for the question based on the words in the context.
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Question: Context : Hermann-Friedrich Joppien (19 July 1912 -- 25 August 1941) was a German Luftwaffe military aviator during World War II, a fighter ace credited with 70 enemy aircraft shot down in roughly 270 combat missions. 
Question : During which historic war was Hermann-Friedrich Joppien an officer?

Answer: World War II


Question: Context : Andrés Gimeno Tolaguera (born 3 August 1937 in Barcelona, Spain) is a retired Spanish tennis player. 
Question : What city is Andrés Gimeno from?

Answer: Barcelona


Question: Context : ISO 3166-2:VI is the entry for the United States Virgin Islands 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. 
Question : Who set the standards for ISO 3166-2:VI?

Answer:
International Organization for Standardization