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.

Example Input: Question: In what state did Lisa Lisa appear at the eighth annual Forever Freestyle showcase? Passage:Lisa Lisa released a solo album called LL77 in 1994, which included the moderate club hit "When I Fell In Love" (which was remixed by Junior Vasquez) and the notable single "Skip to My Lu", which hit No. 38 on the R&B chart. She resurfaced circa 2001 on the Nickelodeon series Taina, in which she played the title character's mother. On June 24, 2008, Lisa Lisa presented an award at the BET Awards sparking interest that she may be plotting a comeback. In 2009, she released Life 'n Love, a full-length album of new material on Mass Appeal Entertainment featuring the single "Can't Wait" with guest rapper Pitbull. The album also features a cover version of the song "Stand" which was originally performed by Taylor Dayne on her 1998 album Naked without You. In March 2014, she appeared with Stevie B., TKA, Sa-Fire, and others at the eighth annual Forever Freestyle showcase at the Lehman College Center for the Performing Arts in the Bronx.
Links: a. Nickelodeon b. Naked Without You (album) c. Lehman College d. Nickelodeon
Example Output: c

Example 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
Example Output: a

Example Input: Question: Which rolling stock did the Turboliner replace? Passage:Following its takeover of most passenger rail service in the United States on May 1, 1971, Amtrak retained the Abraham Lincoln as a daily Chicago-St. Louis service, operating in tandem with the GM&O's old Limited. In November of that year Amtrak extended both the Abraham Lincoln and the Limited (now known as the Prairie State) through Chicago to Milwaukee, Wisconsin. In October 1973, Amtrak replaced the rolling stock with the new French-built Turboliner; as part of this change the trains were re-branded as Turboliners and truncated to Chicago. In February 1976 Amtrak returned conventional rolling stock to the route and revived the Abraham Lincoln name along with the Ann Rutledge. Amtrak added the State House to the Chicago-St. Louis corridor in 1977. Also in 1977, Amtrak extended the Abraham Lincoln to Kansas City and renamed it the Ann Rutledgea name that had briefly disappeared from the timetable in 1976-77 when Amtrak extended the Inter-American to Chicago. Today service between Chicago and St. Louis is handled by the "Lincoln Service".
Links: a. Kansas City, Missouri b. Ann Rutledge (train) c. Turboliner d. Alton Limited
Example Output:
c