Question: The Plymouth City Airport was officially opened by a man that was King of the UK until what year?

Related documents: [0]  [DOC] Edward VIII (Edward Albert Christian George Andrew Patrick David; 23 June 1894 – 28 May 1972) was King of the United Kingdom and the Dominions of the British Empire, and Emperor of India, from 20 January 1936 until his abdication on 11 December the same year. [END] 
[1]  [DOC] Plymouth City Airport (IATA: PLH, ICAO: EGHD) is a 'mothballed' airport located within the City of Plymouth 3.5 NM north northeast of the city centre in Devon, England at Roborough. The airport opened on this site in 1925 and was officially opened by the future Edward VIII, as Prince of Wales, in 1931. The airport is located close to the city centre and has a modern terminal. [END]  
Answer: 1936
1936