Given the task definition and input, reply with output. 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'.

Context: Born in New York City, he led the Brooklyn Atlantics, the team he joined in 1862 Link Information: Established on August 14, 1855, Atlantic was a founding member of the National Association of Base Ball Players in 1857 Question: For how many years did the team that Start joined in 1862 exist?
Answer: 7