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: What was the age of Raul Boesel the year that Serra qualified for the 1982 Canadian Grand Prix? Passage:Francisco "Chico" Serra (born 3 February 1957 in São Paulo) is a racing driver from Brazil. He won the 1979 British Formula 3 Championship. He participated in 33 Formula One World Championship Grands Prix for Fittipaldi and Arrows, debuting on 15 March 1981. He made 18 starts, not qualifying for the remaining fifteen races, although he ought to have started as the reserve in the 1982 Swiss Grand Prix. However, Ferrari withdrew Patrick Tambay's entry so late that Serra was not allowed to take part. Serra scored one championship point, for finishing sixth in the 1982 Belgian Grand Prix. After qualifying for the 1982 Canadian Grand Prix, Serra and countryman Raul Boesel had a short scuffle. Serra was furious at Boesel for blocking his last flying lap after waving Keke Rosberg by. Boesel denied that this was intentional. Serra made one CART Champ Car start in 1985 at the Portland International Raceway for Ensign Racing but suffered an engine failure.
 Links: a. Arrows Grand Prix International b. Ensign Racing c. Scuderia Ferrari d. Raul Boesel
Example Output: d

Example Input: Question: Which artist Chris Brown played with during a celebrity basketball game in Orlando is the oldest? Passage:On March 2, 2012, Brown released the first episode of his Fortune web series, showing him backstage at the 2012 Lo Nuestro Awards where he performed "International Love" with Pitbull, playing in a celebrity basketball game during NBA All-Star Weekend in Orlando with rappers Common, 50 Cent, T.I., and singer R. Kelly, as well as partying and dancing at the club. In April 2012, Brown appeared in Australia as one of the performing acts for the urban music festival, Supafest. His set list composed of thirteen songs, which were "Turn Up the Music", "Till I Die", "Run It!", "Deuces", "Yeah 3x", "Look at Me Now", "Beautiful People", "She Ain't You", "Wet the Bed", "My Last", "Body 2 Body" and "Birthday Cake". On May 8, 2012, Brown appeared on Dancing with the Stars (US) to perform "Turn Up the Music". For the performance, Brown and his dancers wore suits. He later performed the song at the 2012 Billboard Music Awards, held at the MGM Grand Garden Arena in Paradise, Nevada on May 20, 2012. The performance featured projected images on the stage backdrop and BMX bike stunt troupes racing around the stage, as Brown performed choreographed routines while lip synching. His performance was met with a mixed response from celebrities, most notably Joe Jonas, Pink, and Carey Hart, who all criticized the singer for lip synching. On June 8, 2012, Brown appeared on NBC's Today show and performed "Turn Up the Music", "Don't Wake Me Up", "Yeah 3x" and "Forever", as part of the program's "Summer Concert Series". At the 2012 BET Awards on July 1, 2012, he performed a medley of "Turn Up the Music" and "Don't Wake Me Up", and appeared shirtless for the performance with half his body spray painted in grey. Brown performed acrobatic moves with six backup dancers "under triangle-shaped beams" as green and red flashing lights appeared throughout the stage.
 Links: a. 2012 Billboard Music Awards b. Pink (singer) c. Paradise, Nevada d. Common (rapper)
Example Output: d

Example Input: Question: Who wrote the final issue of Aquaman? Passage:He was spun off into his own title, the 1968–74 series Sub-Mariner. The super-villain Tiger Shark was introduced in issue #5 by writer Roy Thomas and artist John Buscema and the super-hero Stingray in issue #19 by Thomas and Bill Everett. Some of the later issues of this Sub-Mariner series are notable for having been written and drawn by the character's creator, Bill Everett, shortly before his death; as well, they reintroduced a now-older Namora, and introduced her daughter, Namorita Prentiss. By now more of a reluctant superhero "the Sub-Mariner was perfect for the Marvel Age of angst-ridden protagonists. Noble yet misunderstood, powerful yet thwarted ... [he was] portrayed as a regal monarch – a king without a country." The final issue, #72 (Sept. 1974), was written by Steve Skeates and featured an unofficial intercompany crossover with the last issue of DC Comics' Aquaman series. A five- to six-page backup feature, "Tales of Atlantis", chronicling the undersea kingdom from its ancient origins, appeared in issues #62–66 (June–Oct. 1973), written by Gerber, with penciling by Howard Chaykin and later Jim Mooney. After the cancellation of Sub-Mariner, Namor co-starred with Doctor Doom in the Super-Villain Team-Up series. The series suffered from mediocre sales due to its lack of a stable creative team, and following issue #13 Namor was dropped from the co-star spot.
 Links: a. John Buscema b. Aquaman c. Aquaman d. Stingray (comics)
Example Output:
b