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: And in 2011, he was a faculty member on the Hertog Political Studies Program in Washington, D.C. Lynch was granted the Olin Faculty Fellowship to support his work on a new book about Machiavelli's thoughts on war. Additionally, on the 500th anniversary of the writing of Machiavelli's The Prince, Link Information: none Question: How many copies have sold of the book that Lynch discussed at its 500th anniversary in 2011?
Answer: none