Question: Reginald Fletcher was minister of Civil Aviation under what British Labour politician who served as prime minister of the United Kingdom from 1945 to when?
Sentence (from "Reginald Fletcher, 1st Baron Winster"): Reginald Thomas Herbert Fletcher, 1st Baron Winster (27 March 1885 – 7 June 1961) was a British Liberal then Labour politician.
Relevant evidence: No