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 Sao 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: What was the real name of the wrestler Buffalo defeated in order to win his first title in Osaka Pro? Passage:In April 1999, Yamada joined the Osaka Pro Wrestling promotion, where he began wrestling under a mask as Black Buffalo, a character inspired by the Osaka Kintetsu Buffaloes baseball team. He made his debut for the promotion at its first event on April 29, where he, Dick Togo and Violencia, forming the villainous alliance Legion of Violence (LOV), were defeated in a six-man tag team main event by Masato Yakushiji, Naohiro Hoshikawa and Super Delfin. Buffalo kept teaming with Togo for the rest of the year. On November 21, Buffalo won his first title in Osaka Pro, when he defeated Super Delfin for the UWF Super Welterweight Championship, only to lose it back to him seven days later. In early 2000, LOV was joined by Daio Quallt and Policeme~n, replacing Violencia. On May 1, Buffalo and Togo defeated Super Delfin and Super Demekin in the finals to win the 1st Anniversary Tag Tournament. In September, Buffalo took part in the inaugural Tenno-zan tournament, where he made it to the semifinals, before being eliminated by Super Delfin. After Dick Togo left Osaka Pro at the end of 2000, LOV was disbanded and replaced by the new group, FLUXxx, as a member of which Buffalo formed a new tag team named Infinity with Tsubasa. After reaching the semifinals of the 2001 Osaka Tag Festival, Buffalo and Tsubasa defeated Super Delfin and Takehiro Murahama on July 21 to win the vacant Osaka Pro Wrestling Tag Team Championship. They would lose the title to Murahama and Kaiju Zeta Mandora on August 24. The following October's Tenno-zan saw a repeat of the previous year's tournament as Buffalo was eliminated in the semifinals by Super Delfin. On January 27, 2002, Buffalo, Tsubasa and Gamma defeated Super Delfin, Super Demekin and Takehiro Murahama to win the Trios Cup Tournament. On August 25, Buffalo and Tsubasa regained the Osaka Pro Wrestling Tag Team Championship by defeating the Kishiwada Gurentai (Big Boss MA-G-MA and Daio Quallt). After a five-month reign, they would lose the title to Jyushin Thunder Liger and Takehiro Murahama on February 1, 2003.
Links: a. Magnitude Kishiwada b. Super Delfin c. Super Delfin d. Super Delfin
Example Output: b

Example Input: Question: When was Sears Point built? Passage:Hubert made his first Winston Cup race in his first attempt with Jim Wilson's #78 team at Sears Point during the 1997 season. He would bring the #78 Hanes / Diamond Rio Ford home in the 28th position, one lap down. His next start would come in 1998 with the #19 team owned by Kurt Roehrig. He qualified an impressive 10th in his second race at Sears Point, however the #19 Bradford White Ford would finish 41st after a transmission failure 78 laps into the race. His second start during the 1998 season would come at Watkins Glen with Dan Marino and Bill Elliott's #13 team. Hubert drove the #13 FirstPlus Financial Ford to a 36th-place finish. He would return to Roehrig's team in 1999 for three races. His first start would come at Las Vegas where he qualified fourth, finishing in the 28th position. Again, Hubert raced at Sears Point where he would finish in the 33rd position, one lap down. He also attempted the Pepsi 400 at Michigan, however he was unable to qualify. In 2000, he would make one start with Penske Racing and the #12 Mobil 1 Ford. He would finish the Global Crossing @ The Glen in 33rd place after starting 16th. In 2001, Hubert qualified Buckshot Jones' #44 Georgia Pacific Dodge for the Dodge/Save Mart 350. In 2002, he would race the Sirius Satellite Radio at the Glen for Bill Davis Racing. Hubert finished the #23 Hills Brothers Coffee Dodge in the 24th position after starting 40th. He would return to the series in 2004 with Kirk Shelmerdine Racing, driving each of the road courses. At the newly renamed Infineon Raceway (formerly Sears Point Raceway) he would finish 43rd in the #72 Freddie B's Ford after running five laps at too slow of a pace for NASCAR. The Watkins Glen would be much better for Hubert as he would finish in the 29th position just one lap down. He would return to Shelmerdine's team for 2005 and attempt each of the road courses. He would make the race at Infineon, however he finished 43rd after oil pressure problems. Hubert would not make the Sirius at The Glen after qualifying was rained out. Hubert again raced for Shelmerdine in 2006 for the Dodge/Save Mart 350, but was swept up in a crash on the opening lap and once more finished last.
Links: a. Hills Bros. Coffee b. Sonoma Raceway c. Watkins Glen International d. Kirk Shelmerdine
Example Output:
b