In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

Context: Delta Connection regional jet service to Atlanta flown by Atlantic Southeast Airlines (ASA) on behalf of Delta Air Lines ended on May 1, 2008 Link Information: The mayor of Atlanta is Keisha Lance Bottoms, a Democrat elected on a nonpartisan ballot whose first term in office began on January 2, 2018. Answer: Keisha Lance Bottoms
Who is the mayor of the city that Delta Connection ended service to on May 1, 2008?

Context: In 2013, Willis co-presented the ITV Link Information: ITV is a British free-to-air television network with its headquarters in London. It was launched in 1955 Answer: 1955 
When was the TV network Willis co-presented on in 2013 founded?

Context: Massey joined the Canadian Army at the outbreak of World War I, Link Information: First World War, the Great War, the Seminal Catastrophe, and initially in North America as the European War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Answer: 4

How long did the war in which Massey joined the Canadian Army last?