In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

[Q]: Context: Built by Polish engineer Thaddeus Kosciuszko under the command of George Washington, Fort Mercer was built in 1777 Link Information: Andrzej Tadeusz Bonawentura Kościuszko (; 4 or 12 February 1746  Answer: 31
[A]: How old was the engineer who built Fort Mercer when it was built?


[Q]: Context: On 21 January 1779, Cooke was promoted to lieutenant and joined in the East Indies under Sir Edward Hughes Link Information: On 21 January 1779, Cooke was promoted to lieutenant and joined in the East Indies under Sir Edward Hughes Answer: 58
[A]: How old was Sir Edward Hughes when Cooke was promoted to Lieutenant?


[Q]: Context: The King's Royal Rifle Corps was an infantry rifle regiment of the British Army that was originally raised in British North America as the Royal American Regiment during the phase of the Seven Years' War Link Information: none Answer: none
[A]:
What year did the regiment's title change?