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.

Context: he following year, President Ulysses S. Grant closed the federal government for the holiday, and most businesses followed, which greatly contributed to attendance at the cemetery. Link Information: Ulysses S. Grant (born Hiram Ulysses Grant; April 27, 1822 – July 23, 1885) was an American soldier and politician who served as the 18th president of the United States from 1869 to 1877.  Answer: 1869 to 1877
What years did Ulysses S. Grant serve as president?

Context: hile other distant relatives included Senator J.M. Howard and President William Howard Taft. Link Information: William Howard Taft (September 15, 1857 – March 8, 1930) was the 27th president of the United States (1909–1913) Answer: 4
How many years was Taft president?

Context: Wernher von Braun's rocketry team working at Peenemünde expressed interest in Walter's ideas, and in 1936 began a programme of installing Walter rockets into aircraft. Link Information: Wernher Magnus Maximilian Freiherr von Braun (March 23, 1912 – June 16, 1977) Answer: 24

How old was von Braun when his team installed Walter rockerts into experimental aircrafts?