Please answer the following question: Facts: - clubs: manchester city exeter city aldershot - caps: 1 31 12 - position: wing half - years: 1948 -- 1949 1949 -- 1950 1950 -- 1951 - totalcaps: 44 - fullname: john greenwood - name: john greenwood - totalgoals: 2 - goals: 0 2 0 Based on these bullet points, write a short biography describing the life of john greenwood -lrb- footballer -rrb- .
Answer:
john greenwood is a footballer who played as a wing half in the football league for manchester city , exeter city and aldershot .