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: Later in his time at Everton first team appearances became more uncommon for Thomson as he was displaced from the team by Joe Mercer. Thomson retired from playing in 1938 Link Information: a match against Liverpool on 10 April 1954, and finally called time on his footballing career the year after. Question: How long after Thomson retired from playing did the player that replaced him on the Everton team also stop playing?
A:
Answer: 17