Given the task definition and input, reply with output. 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.

Context : Boston and Maine 3713 is a P-4a class 4-6-2 Pacific type steam locomotive built by the Lima Locomotive Works for the Boston and Maine Railroad in December 1934.
Answer : December 1934
What year was Boston and Maine 3713 made?