Please answer the following question: Information: - William Warrender Mackenzie , 1st Baron Amulree GCB KBE PC KC ( 19 August 1860 -- 5 May 1942 ) , known as Sir William Mackenzie between 1918 and 1929 , was a British barrister , public servant and Labour , later National Labour , politician . He served as Secretary of State for Air under Ramsay MacDonald between 1930 and 1931 . - The Secretary of State for Air was a cabinet-level British position. The person holding this position was in charge of the Air Ministry. It was created on 10 January 1919 to manage the Royal Air Force. On 1 April 1964, the Air Ministry was incorporated into the Ministry of Defence, and the position of Secretary of State for Air was abolished. - The Royal Air Force (RAF) is the United Kingdom's aerial warfare force. Formed towards the end of the First World War on 1 April 1918, it is the oldest independent air force in the world. Following victory over the Central Powers in 1918 the RAF emerged as, at the time, the largest air force in the world. Since its formation, the RAF has taken a significant role in British military history, in particular, playing a large part in the Second World War where it fought its most famous campaign, the Battle of Britain. - James Ramsay MacDonald, (12 October 18669 November 1937) was a British statesman who was the first Labour Party Prime Minister, leading Labour governments in 1924, 19291931 and, having been expelled from the party he had helped to found, a National Government from 1931 to 1935. What is the relationship between 'william mackenzie' and 'labour party'?
Answer:
member of political party