In this task, you're given a passage, further information available on a particular linked term from the statement, and a question. Your job is to generate the answer to the question by using the information provided. If there is no clear answer obtainable, output 'none'.

Ex Input:
Passage: His involvement with Birmingham's first team increased, and on 27 January 2018, he was given a squad number and included among the substitutes for the FA Cup fourth-round visit to Premier League club Huddersfield Town. He remained unused as Birmingham drew the match, but made his senior debut in the replay ten days later. Use of a fourth substitute during extra time of an FA Cup tie, trialled in the later rounds of the 2016–17 edition, was permitted from the first round in 2017–18. Lakin became the first Birmingham player to be used under that arrangement when he replaced Jason Lowe after 101 minutes with his team already 3–1 down; the match finished as a 4–1 defeat. According to the Birmingham Mail, on his first involvement in the match, "he gathered possession on the edge of his own area, surged through his half and threaded a superb pass to Jota which set Blues away on the counter", showing the "sort of technical ability which has made him such a big hit in his first full season at Under 23 level." Two weeks later, Lakin signed a new contract to run until 2020, with a further one-year option in the club's favour.
 Link Information: Lowe has spent most his career at Blackburn Rovers Question: How many different teams did the player Lakin replaced at  in the 2017–18 FA Cup play for?

Ex Output:
Answer: 3


Ex Input:
Passage: In the immediate aftermath of World War II, the leadership of the Soviet Union feared the United States would use its nuclear superiority to its advantage, as from 1945 to 1948 the U.S. was the only state possessing nuclear weapons. The USSR countered by rapidly developing their own nuclear weapons, surprising the US with their first test in 1949. In turn, the U.S. countered by developing the vastly more powerful thermonuclear weapon, testing their first hydrogen bomb in 1952 at Ivy Mike, but the USSR quickly countered by testing their own thermonuclear weapons, with a test in 1953 of a semi-thermonuclear weapon of the Sloika design, and in 1956, with the testing of Sakharov's Third Idea – equivalent to the Castle Bravo device. Meanwhile, tensions between the two nations rose as 1956 saw the suppression of Hungary by the Soviets; the U.S. and European nations drew certain conclusions from that event, while in the U.S., a powerful social backlash was afoot, prompted by Senator Joseph McCarthy, the House Un-American Activities Committee, and Julius and Ethel Rosenberg, U.S. citizens executed in 1953 after conviction of espionage. This atmosphere was further inflamed by the 1957 launch of Sputnik, which led to fears of Communists attacking from outer space, as well as concerns that if the Soviets could launch a device into orbit, they could equally cause a device to re-enter the atmosphere and impact any part of the planet. John F. Kennedy capitalized on this situation by emphasizing the Bomber gap and the Missile gap, areas in which the Soviets were (inaccurately) perceived as leading the United States, while heated Soviet rhetoric added to political pressure. The 1960 U-2 incident, involving Francis Gary Powers, as well as the Berlin Crisis, along with the test of the Tsar Bomba, escalated tensions still further.
 Link Information: The Berlin Crisis of 1961 () occurred between 4 June – 9 November 1961 Question: Which event occured first, the U2 incident or the Berlin Crisis?

Ex Output:
Answer: 1960 U-2 incident


Ex Input:
Passage: The Chargers switched to a 3-4 defensive scheme in 2004 and fielded Williams at nose tackle, arguably the most important position in the 3-4 defense. Williams recorded 32 tackles (25 solo), 4 sacks, and 4 pass deflections in 15 games. He became widely recognized as one of the top 3-4 nose tackles in the NFL and was named an AP 2nd Team All-Pro, and was also selected as the Chargers' Defensive Player of the Year as well as Lineman of the Year. In the 2005 season, Williams recorded 53 tackles (40 solo) and 4 pass deflections in 16 games and was named a Pro Bowl starter and was named 1st Team All-Pro by the Associated Press and The Sporting News, He Again Was Selected Chargers Defensive Player of the year And Lineman of the year for the Second Time in his Career. He finished the 2006 season with 69 tackles (49 solo), 2 sacks, and 2 pass deflections in 16 games and was again named a Pro Bowl starter, as well as 1st Team All-Pro by the AP, The Sporting News, and the Football Writers Association of America, And Was selected Chargers Lineman of the Year for the Third time in his Career. During the 2007 season, Williams recorded 39 tackles (32 solo), 1 forced fumble, and 2 pass deflections in 13 games and was named a Pro Bowl reserve following the season. Williams finished 2008 with 56 tackles (46 solo), 1.5 sacks, and 3 pass deflections in 16 games, Williams Was Selected Chargers Defensive Player of the Year (For The Third Time In his Career), Lineman of the Year (For The fourth Time In His Career) And Co-Most Valuable Player With Philip Rivers. In 2009, Williams suffered a season-ending triceps injury in the first game and finished with just 3 solo tackles. He was named to the Chargers 50th Anniversary Team that year. 
 Link Information: He was named to the Chargers 50th Anniversary Team that year. Question: How many other players were on the team?

Ex Output:

Answer: 52