In this task, you're given a question, a context passage, and four options which are terms from the passage. After reading a passage, you will get a brief understanding of the terms. Your job is to determine by searching and reading further information of which term you can answer the question. Indicate your choice as 'a', 'b', 'c', or 'd'. If you think more than one option is plausible, choose the more probable option to help you answer the question.

Input: Consider Input: Question: How many President's children have lived in the White House? Passage:Within weeks, many Americans could recite favorite lines from the record, including "the rubber schwan [swan] is mine", and "move ahead...with great vigah [vigor]", the latter lampooning the President's own words. The album poked fun at Kennedy's PT-109 history; the rocking chairs he used for his painful back; the Kennedy clan's well-known athleticism, football games and family togetherness; children in the White House; and Jackie Kennedy's soft-spoken nature and her redecoration of the White House; and many other bits of knowledge that the public was eager to consume. Kennedy himself was said to have given copies of the albums as Christmas gifts, and once greeted a Democratic National Committee group by saying, "Vaughn Meader was busy tonight, so I came myself." According to UPI reporter Merriman Smith, during a Cabinet meeting Kennedy played the entire record for everyone. At one press conference, Kennedy was asked if the album had produced "annoyment (sic) or enjoyment." He jokingly responded, "I listened to Mr. Meader's record and, frankly, I thought it sounded more like Teddy than it did me. So, now he's annoyed."
Links: a. Child b. Rocking chair c. Sport d. Ted Kennedy

Output: a

Input: Consider Input: Question: How long had Kortrijk been a team when Gillenken made his debut for OH Leuven? Passage:Gillekens made his debut for OH Leuven in the 201415 Belgian Cup in the sixth round match against Kortrijk, a 1-3 loss, although that season he was part of the reserves and only fourth goalkeeper behind Logan Bailly, Yves Lenaerts and Senne Vits. Later that season he also played one match in the 201415 Belgian Second Division against Mons. Although Gillekens was promoted to third keeper for the 201516 season, he did not play a single match that season. Following the relegation from the 201516 Belgian Pro League, first goalkeeper Rudy Riou was released while second goalkeeper Yves Lenaerts had already signed for ASV Geel. As such, Gillekens was promoted to first goalkeeper for the 201617 season in the Belgian First Division B. During the winter 201718 transfer window OH Leuven signed Kawin Thamsatchanan, captain of the Thailand national football team and soon thereafter Gillekens was demoted to reserve goalkeeper. Following Thamsatchanan's injury during the 201819 season, Gillekens again became first goalkeeper for a few matches before then being surpassed by Laurent Henkinet. Towards the end of the season, Gillekens was even demoted to third goalkeeper with Thamsatchanan now taking his place on the bench and after the final match of the season it became clear that Gillekens would not be signing a new deal at OH Leuven.
Links: a. K.V. Kortrijk b. 201617 Belgian First Division B c. Yves Lenaerts d. Thailand national football team

Output: a

Input: Consider Input: Question: Which basketball team did the buyer of the St. Louis Rams in 2010 own? Passage:The NFL forbids religious groups, governments, and non-profit organizations owning a team. The NFL requires a controlling owner to hold at minimum a 30% stake in the team and forbids ownership groups of over 24 people, or any publicly traded corporations from purchasing NFL teams; one team, the Green Bay Packers, is exempt from this under a grandfather clause and is owned by shareholders. The Houston Texans are also grandfathered in for their home countythe Harris County, Texas governmentwhich owns 5% of the team, as the rule forbidding governments from owning a team became effective in 2007. The NFL's constitution also forbids its owners from owning any other professional football teams, except for Arena Football League teams located in the NFL team's home market. In addition, the controlling owners of NFL teams were previously only permitted to own major league baseball, basketball and hockey teams if they were in the NFL team's home market, or were not located in other NFL cities. (Stan Kroenke, who owned hockey and basketball teams in Denver, was nonetheless unanimously allowed to buy the then-St. Louis Rams in 2010 and hold on to his Denver assets until 2015. Even then, the Denver assets were transferred to his wife, Ann.) Soccer has been exempt from these restrictions since 1982, when the league lost a lawsuit filed by the original NASL stemming from the investments of Kansas City Chiefs owner Lamar Hunt and Elizabeth Robbie, the wife of Miami Dolphins owner Joe Robbie in NASL teams; as a result, NFL owners have owned teams in MLS in other NFL markets. In October 2018, the NFL owners voted to relax the cross-ownership rule, allowing controlling NFL owners to own other professional teams within NFL markets. The league also informally requires prospective owners to have relatively liquid assets and positive cash flow; having a majority of one's wealth invested in real estate, for example, is grounds for rejection.
Links: a. Grandfather clause b. Kansas City Chiefs c. Stan Kroenke d. Los Angeles Rams
Output: c