Question: The person who Neville Chamberlain succeeded as prime minister died in what year?

Context articles: Birmingham Edgbaston by-election, 1940
Rise of Neville Chamberlain
Peace for our time
Anne Chamberlain
Dominion (Sansom novel)
Swedish governmental line of succession
Hugh Dalton
National Government (1937–1939)
Stanley Baldwin
Neville Chamberlain

The Birmingham Edgbaston by-election, 1940 was a parliamentary by-election held for the British House of Commons constituency of Birmingham Edgbaston on 18 December 1940.
 The seat had become vacant when Neville Chamberlain, the constituency's Conservative Party Member of Parliament had died from stomach cancer on 9 November.
 Chamberlain had been Prime Minister until May 1940, and had held the Edgbaston seat since the 1929 general election.
The early life, business career and political rise of Neville Chamberlain culminated on 28 May 1937, when he was summoned to Buckingham Palace to "kiss hands" and accept the office of Prime Minister of the United Kingdom.
 Chamberlain had long been regarded as Prime Minister Stanley Baldwin's political heir, and when Baldwin announced his retirement, Chamberlain was seen as the only possible successor.
"Peace for our time" was a declaration made by British Prime Minister Neville Chamberlain in his 30 September 1938 speech concerning the Munich Agreement and the Anglo-German Declaration.
 The phrase echoed Benjamin Disraeli, who, upon returning from the Congress of Berlin in 1878, stated, "I have returned from Germany with peace for our time".
 It is primarily remembered for its ironic value: less than a year after the agreement, Hitler's continued aggression and his invasion of Poland was followed by declarations of war on Germany by France and the United Kingdom.
Anne de Vere Chamberlain (née Cole; 1883 – 12 February 1967) was the wife of British Prime Minister Neville Chamberlain.
Dominion is a 2012 alternate history novel by British author C. J. Sansom.
 It is a political thriller set in the early 1950s against the backdrop of a Britain that has become a satellite state of Nazi Germany.
 The point of divergence from actual history is that Lord Halifax, rather than Winston Churchill, succeeded Neville Chamberlain as Prime Minister in May 1940.
The Swedish constitution of 1974 allows the Prime Minister of Sweden to appoint one of the Ministers in the cabinet as Deputy Prime Minister ("biträdande statsminister", also unofficially known as "vice statsminister", "Vice Prime Minister"), in case the Prime Minister for some reason is prevented from performing his or her duties.
 However, if a Deputy Prime Minister has not been appointed, the Minister in the cabinet who has served the longest time (and if there are several with equal experience the one who is oldest) takes over as head of government.
 Note that the person acting as Prime Minister does not do so on a permanent basis: if a Prime Minister dies, resigns or loses a vote of confidence in the Riksdag, the Speaker of the Riksdag will then confer with the parties of the Riksdag and propose a new Prime Minister, who must be tolerated by a majority of the Riksdag.
 If the Prime Minister has resigned or lost a vote of confidence, he or she will remain the head of a government "ad interim" until the new Prime Minister assumes his or her office.
 The only case where the governmental line of succession becomes relevant is when the Prime Minister dies (upon which the person next in the line of succession serves as the head of a government "ad interim") or when the Prime Minister is on leave or for any other reason incapable of serving, but still remains in office.
 This might be compared to the Presidential line of succession in the United States, where the person next in line assumes the Presidency throughout the remainder of the term if the President dies, resigns or is impeached.
Edward Hugh John Neale Dalton, Baron Dalton PC (16 August 1887 – 13 February 1962) was a British Labour Party economist and politician who served as Chancellor of the Exchequer from 1945 to 1947.
 He shaped Labour Party foreign-policy in the 1930s, opposed pacifism, promoted rearmament against the German threat, and strongly opposed the appeasement policy of Prime Minister Neville Chamberlain in 1938.
 He served in Churchill's wartime coalition cabinet.
 As Chancellor, he pushed his cheap money policy too hard, and mishandled the sterling crisis of 1947.
 Dalton's political position was already in jeopardy in 1947, when, he, seemingly inadvertently, revealed a sentence of the budget to a reporter minutes before delivering his budget speech.
 Prime Minister Clement Attlee accepted his resignation, but he later returned to the cabinet in relatively minor positions.
The National Government of 1937–1939 was formed by Neville Chamberlain on his appointment as Prime Minister of the United Kingdom by King George VI.
 He succeeded Stanley Baldwin, who announced his resignation following the coronation of the King and Queen in May 1937.
Stanley Baldwin, 1st Earl Baldwin of Bewdley, (3 August 186714 December 1947) was a British Conservative politician who dominated the government in his country between the two world wars.
 Three times Prime Minister, he is the only premier to have served under three monarchs (George V, Edward VIII and George VI).
Arthur Neville Chamberlain, ( ; 18 March 1869 – 9 November 1940) was a British Conservative politician who served as Prime Minister of the United Kingdom from May 1937 to May 1940.
 Chamberlain is best known for his appeasement foreign policy, and in particular for his signing of the Munich Agreement in 1938, conceding the German-speaking Sudetenland region of Czechoslovakia to Germany.
 However, when Adolf Hitler later invaded Poland, the UK declared war on Germany on 3 September 1939, and Chamberlain led Britain through the first eight months of World War II.