instruction:
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.
question:
Context: As the flotilla carrying the casket closed on Dover Castle Link Information: Built in the early 2nd century Answer: the early 2nd century
answer:
When was the building the Unknown Warrior's body was taken to built?


question:
Context: Albany–Sumner Avenues was a station on the demolished BMT Fulton Street Line Link Information: The remainder of the line west of (now 80th Street) was closed on April 26, 1956, Answer: April 26, 1956
answer:
When did rail line that the Albany-Sumner Avenues station was located close?


question:
Context: Leaving law school early to enter the military for World War I, McNamara served in the United States Army and attained the rank of sergeant as a member of the 87th Division Link Information: In the United States, conscription began in 1917 and was generally well received, with a few pockets of opposition in isolated rural areas. The administration decided to rely primarily on conscription, rather than voluntary enlistment, to raise military manpower for when only 73,000 volunteers enlisted out of the initial 1million target in the first six weeks of the war. In 1917 10 million men were registered Answer: 1917 
answer:

When did the US enter the war that McNamara fought in as a sergeant of the 87th Division?