In this task, you're given a passage, 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 passage 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 passage or linked information.
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Question: Passage: The Island of Hawaii was first inhabited by Polynesians who arrived in canoes and spread to the other Hawaiian islands. After the contact by the British explorer James Cook the islands became well known and Europeans came and inhabited them. The French government was interested in the islands and wanted to establish Catholicism. The Kingdom of Hawaii became more influenced by the United States which set up trade relations with the Kingdom. After the overthrow of the Hawaiian Kingdom in 1893, the new Republic of Hawaii government lobbied for annexation by the United States. Annexation was approved by President William McKinley and Hawaii was incorporated as part of the territory of the United States on August 12, 1898, and then, in April 1900, organized as the territory of Hawaii.
Link Information: Cook travelled north and in 1778 became the first European to begin formal contact with the Hawaiian Islands. Answer: 1778

Answer: In what year did James Cook arrive at the Hawaiian Islands?

Question: Passage: Released from Wolverhampton Wanderers in 2005 without a first-team appearance to his name, Slater joined non-league Chasetown. Helping the "Chase" take Oldham Athletic to a replay at Boundary Park in the first round of the FA Cup in November 2005 was just the beginning of Slater's and Chasetown's cup adventures. By April 2006 he had won a trial with Tranmere Rovers, and was also being looked at by Blackpool and Crewe Alexandra, all English Football League clubs. He helped Chasetown to win the Midland Football Alliance title at the end of the 200506 season. He was at The Scholar Ground for the first season of the new Southern League Division One Midlands tier (200607). He came to prominence when playing in Chasetown's 10 FA Cup victory over League One Port Vale in December 2007. In doing this he helped Chasetown become the lowest ever ranked club to reach as far as the Third Round (proper) of the FA Cup. Vale was the eighth club Chasetown had vanquished in their campaign that season. In his three years at the club he had played 146 league games for the "Scholars", scoring one goal.
Link Information: none Answer: none

Answer: Which of the English Football League clubs Slater was being looked at in 2006 won the most championships?

Question: Passage: Described by will.i.am as "party album[s]", The Black Eyed Peas released the electronic dance-influenced The E.N.D. and The Beginning in 2009 and 2010, following the 2008 election of Barack Obama as President of the United States. The band welcomed Obama's election; will.i.am had recorded and released "Yes We Can", a single that promoted Obama's election campaign during the Democratic Party primaries, and often claims the song had helped Obama get elected. The band's most commercially successful single during this period, "I Gotta Feeling", was inspired by the band's perception of being "in the center of a ginormous change in America". The track became the best-selling digital song of all time until it was surpassed by Pharrell Williams' "Happy" in 2014. By the end of 2010, The E.N.D. had sold over eleven million copies worldwide, while The Beginning had sold over two million copies worldwide. The band had intended to return to the studio to create their seventh studio album soon after the release of The Beginning, though frequent delays and Taboo's diagnosis with testicular cancer in 2014, along with his subsequent treatment and recovery, led to the project being put on hiatus.
Link Information: Worldwide, it was the most successful song of the 21st century (with estimates putting combined sales and streams between 13 and 15 million units) until passed by "Happy" by Pharrell Williams in 2014. Answer: .9

Answer:
What was the difference in copies sold between "I Gotta Feeling" and the song that eventually surpassed it in 2014?