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.
One example is below.
Q: Context : Isaac Nicola Romero (1916 in Havana, Cuba -- 1997) was a prominent Cuban guitarist and one of the founders of the modern Cuban Guitar School.
Answer : Havana
A: What was Isaac Nicola's city of birth?
Rationale: The answer to the generated question according to context is Havana which is correct
Q: Context : The Ordnance QF 20 pounder (simply known as 20 pounder or 20-pr) was a British 84 mm (3.307 inch) tank gun introduced in 1948 and used in the Centurion tank, Charioteer tank, and Caernarvon tank.
Answer : 1948
A:
What year was Ordnance QF 20 pounder made?