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: 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: How old was Svetlana Matveeva when she beat Zapata in 2006? Passage:In 1999, in Santiago won the Pan American Girl's Chess Championship in the age group U20, and in 2000 in Bento Gonçalves won the Pan American Girl's Chess Championship in the age group U18. In 2002, in La Paz she was the second in the Pan American Girl's Chess Championship in the age group U20. In August 2005, she was second in the Pan American Women's Chess Championship, only in a tie-break after losing to Argentinean chess player Claudia Amura. She won four times in the Peruvian Women's Chess Championships: 2000, 2002, 2003 and 2004. In October 2005, after winning the FIDE South America zone tournament, she qualified for the Women's World Chess Championship. In 2006, in Yekaterinburg she participated in the Women's World Chess Championship, where won Kateryna Lagno in the first round, but in the second round lost Svetlana Matveeva. After repeated won the FIDE South America zone tournament in 2007 in Trujillo, where she surpassed her compatriot Deysi Cori, was selected at Women's World Chess Championship in Nalchik, but refused to participate, and her rival in the first round Antoaneta Stefanova went to the second round without a fight. Played for Peru at three Women's Chess Olympiads (2002—2006). In 1999, she was awarded the FIDE International Women International Master (WIM) title.
 Links: a. Kateryna Lagno b. Claudia Amura c. Svetlana Matveeva d. Svetlana Matveeva
Example Output: c

Example Input: Question: What university did Max Herrmann teach at? Passage:Dudow was born in Zaribrod, Bulgaria (today Dimitrovgrad, Serbia). In 1922, he emigrated to Berlin with the intention of becoming an architect. He gave up this plan and began studying theatre in 1923, first under Emmanuel Reicher, and then, from 1925 to 1926, as a theatre studies student under Max Herrmann at the university. He worked with Leopold Jessner and Jürgen Fehling, served as a chorus member under Erwin Piscator, and was a director's assistant to Fritz Lang on the production of Metropolis. During this time, Dudow also ran a bookstore with his wife and worked as a foreign correspondent for a Bulgarian newspaper. In 1929, he visited the Soviet Union, where he met Vladimir Mayakovsky and Sergei Eisenstein in Moscow and eventually, Bertolt Brecht. After his return from the USSR, Dudow directed Brecht's theatrical piece, The Decision (Die Massnahme), and began his film directing career. He was commissioned by the left-wing, Soviet-German production company Prometheus-Film to direct a short film, Wie der Berliner Arbeiter wohnt (1929), as part of the documentary series Wie lebt der Berliner Arbeiter? Dudow's first feature, Kuhle Wampe (To Whom Does the World Belong?, 1932) was a collaboration with Brecht (who provided the script and helped finance the project), Hanns Eisler, and Ernst Ottwalt. It was banned because it was perceived as being politically subversive. 
 Links: a. Dimitrovgrad, Serbia b. Max Herrmann (theatrologist) c. Kuhle Wampe d. Dimitrovgrad, Serbia
Example Output:
b