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: Which of the three emperors who Ji served lived longest? Passage:Jiang Ji (died 18 May 249), courtesy name Zitong, was an official and military general of the state of Cao Wei during the Three Kingdoms period of China. Born in the late Eastern Han dynasty, Jiang Ji started his career as a low-level official in his native Yang Province before becoming a subordinate of Cao Cao, the warlord who controlled the central government towards the end of the Eastern Han dynasty. After the end of the Eastern Han dynasty, he served in the state of Cao Wei through the reigns of the first three emperors – Cao Pi, Cao Rui and Cao Fang – and held various appointments in the military before rising to Grand Commandant, one of the top positions in the central government. During his service in Wei, he was known for being candid in giving advice to the emperor on various issues, including consolidating power, halting labour-intensive construction projects, and officials' abuses of power. In February 249, he joined the regent Sima Yi in staging a successful coup d'état against his co-regent Cao Shuang, but died from illness a few months later.
 Links: a. Cao Pi b. Cao Shuang c. Courtesy name d. Incident at the Gaoping Tombs
Example Output: a

Example Input: Question: How long had the Chicago Cubs been a team when Mahaffey set a strikeouts record for his club? Passage:Mahaffey set a club record with 17 strikeouts in a game against the Chicago Cubs on April 23, 1961. Though he ended the season with an ERA of 4.10, and a record of 11–19 (leading the NL in losses), in 36 games, he was selected to represent the Phillies on the NL All-Star team. Mahaffey ended the season with a record of 19–14, and a 3.94 ERA, with a career high 177 strikeouts, in 41 games. He was selected again in 1962 for the NL All-Star team, finishing 26th in balloting for NL Most Valuable Player (MVP), despite leading the league in home runs allowed with 36, and earned runs allowed with 120. Mahaffey had a 7–10 record in 26 games with the Phillies, to go along with a 3.99 ERA. In , he finished the season with a record of 12–9, with an ERA of 4.52, in 34 games. The ill-fated 1964 team was in first place in the NL, with a 6-game lead, with just 12 games remaining in the season, before starting a 10-game losing streak that cost the team the pennant. Mahaffey pitched in two of the games in that infamous skid, losing a 1–0 game (the first of that losing streak) on a steal of home by Chico Ruiz of the Cincinnati Reds, and was taken out while winning 4-3 in a game against the Milwaukee Braves, in which Rico Carty hit a ninth-inning bases-loaded triple, plating all 3 runners, off of reliever Bobby Shantz, to win the game for the Braves, 6-4. was his last season in Philadelphia, which saw him finish with a 2–5 record, and an ERA of 6.21, in 22 games, mostly in relief.
 Links: a. Chicago Cubs b. 1964 Philadelphia Phillies season c. Atlanta Braves d. Chico Ruiz
Example Output: a

Example Input: Question: Did the Bruins have the same head coach when the team won two consecutive Rose Bowl and a Fiesta Bowl? Passage:The Visalia, CA native was a multi-sport athlete at Mt. Whitney High School where he excelled in football and baseball. Michael’s career statistics of 162 catches for 3,005 yards and 44 touchdowns still stand as one of the top performances in CIF history. Young was recruited by every major college football program in the Country, accepting recruiting visits to Notre Dame, USC, Nebraska, Oklahoma, Washington and UCLA. At UCLA, he played both football and baseball. Young helped the Bruins to two Pac-10 titles, two Rose Bowl (1983, 1984) victories and a Fiesta Bowl (1985) win. Michael was an Academic All-Pac 10 selection in 1984 and in the 1984 Rose Bowl game, Young had 5 receptions for a total of 127 yards, including a 52-yard touchdown pass from Rick Neuheisel. As a two-sport athlete, Young was drafted by the New York Mets in 1983 after hitting .311 his sophomore year. Following the 1985 Fiesta Bowl win, in which he was the leading receiver, he was drafted by the Los Angeles Rams. He earned a bachelor's degree in sociology from UCLA.
 Links: a. University of Oklahoma b. UCLA Bruins c. Visalia, California d. Visalia, California
Example Output:
b