Generate a correct and concise answer for the question based on the words in the context.

Example input: 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. 
Question : What was Isaac Nicola's city of birth?
Example output: Havana
Example explanation: According to context Issac Nicola's city of birth is Havana. Hence this is a correct output.
Q: Context : June 1942, the Aichi H9A was employed in a variety of second-line roles, including anti-submarine missions along the Japanese coasts, transport, paratroop training and liaison. 
Question : Which was the official year for the approval of Aichi H9A?
A:
June 1942