Q: 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: but was defeated by the incumbent Conservative Enoch Powell Link Information: After unsuccessfully contesting the Labour Party's ultra-safe seat of Normanton at a by-election in 1947 (when the Labour majority was 62 per cent), he was elected as a Conservative Member of Parliament (MP) for Wolverhampton South West in the 1950 general election. Question: How long did the Conservative incumbent who defeated Llewelyn-Davies hold the Wolverhampton South-West parliamentary seat?
A:
Answer: 8