Instructions: In this task, you're given a passage, 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'.
Input: Passage: His Carrow Road career was limited by injuries, although he went on to play for Exeter city and Lincoln City in the Football League. In 1998, he dropped into non-league football joining Doncaster Rovers and then Boston United. His career at Boston stalled when he suffered a broken leg in the 30 FA Trophy victory over Tamworth on 13 January 2001. Regaining fitness, he joined King's Lynn ahead of the 200102 season. In January 2002 he joined Stocksbridge Park Steels on loan. In April 2002 he moved on to Grantham Town, agreeing a contract for the following two seasons. In the summer of 2004, Minett joined up with his former Grantham manager John Wilkinson at Lincoln United. Wilkinson moved back to manage Grantham in June 2007 and Minett soon followed him to the Gingerbreads. Minett retired from football in June 2008 following Grantham's unsuccessful bid for promotion.
Link Information: none Question: Who coached the lincoln United team before John Wilkinson?
Output:
Answer: none