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:MD is the entry for Moldova 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:MD?
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Q: Context : The Pont Alexandre III is a deck arch bridge that spans the Seine in Paris. 
Answer : Seine

A: What does Pont Alexandre III cross over?
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Q: Context : The 1961 Derby Aviation crash refers to the fatal crash of a Douglas Dakota IV, registration G-AMSW, operated by Derby Aviation, a subsidiary of British Midland Airways, on the mountain of Canigou, France, on 7 October 1961. 
Answer : 7 October 1961

A:
On what date did 1961 Derby Aviation crash occur?
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