Detailed Instructions: In this task, you're given a statement, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.
Q: Context: He graduated from the United States Military Academy in 1886, and was a classmate and close friend of John J. Pershing. Link Information: General of the Armies John Joseph "Black Jack" Pershing (September 13, 1860 July 15, 1948) Question: How old was John Pershing when he graduated from the United States Military Academy?
A:
Answer: 26