Q: 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 : The QF 3-pounder Hotchkiss or in French use Canon Hotchkiss a tir rapide de 47 mm (47mm / L40) was a light 47-mm naval gun introduced in 1886 to defend against new small fast vessels such as torpedo boats, and later submarines.
Answer : 1886
A:
In which year was the service entry date for QF 3-pounder Hotchkiss?