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

[Q]: Context : Manthor was the Master of the North-march of Brethil, a part of the forest by the River Sirion nearest to the Ford of Brithiach.
Question : What city is Manthor associated with?
[A]: Brethil

[Q]: Context : Designated MA-31 in US service, the first launch of the missile took place in August 1996.
Question : In which year was the service entry date for MA-31?
[A]: 1996

[Q]: Context : Grace Darling died of tuberculosis in October 1842, aged 26.
Question : What medical condition killed Grace Darling?
[A]:
tuberculosis