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

Passage: McNulty moved to Cork City in 2003, initially playing for the club's under-21 side in the Eircom U21 League. In 2005, he was promoted to the first team and made 3 appearances in the league, as City won the league title. McNulty made a further 24 league appearances over the next 4 seasons. In 2010, as Cork City were relegated to the First Division due to financial issues, McNulty established himself as City's starting goalkeeper, making 33 league appearances that season, as City finished in 6th place. He made 29 league appearances in 2011, as City secured promotion back to the Premier Division by winning the league. McNulty continued as City's first choice keeper, missing just 5 league matches in 2012 and 2013. Ahead of the 2014 season, John Caulfield was appointed as Cork City's manager. McNulty made 33 league appearances that season as City finished 2nd in the league to Dundalk. He played in all of Cork City's league matches over the next two seasons, as City finished 2nd to Dundalk on both occasions. McNulty also started the 2015 FAI Cup Final as City were beaten 1-0 after extra time thanks to a goal from Richie Towell. In the 2016 FAI Cup Final, McNulty again started the final, and was on the winning side this time, as Sean Maguire's goal in the last minute of extra time secured a 1-0 win for City. In 2017, McNulty played in all but one of City's league matches, as City won the league title. In the third successive cup final between Cork City and Dundalk, McNulty started the final and saved a penalty from Michael Duffy in a penalty shootout that City eventually won 5-3, after the match finished 1-1 after extra time, to secure a league and cup double for the first time in City's history.
Link Information: John Caulfield (born 11 October 1964) Question: How old was John Caulfield when he was appointed Cork City's manager?
Answer: 50