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.

Input: Consider 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

Output: a


Input: Consider Input: Question: How many cups has the team Franz first played for won? Passage:Franz Burgmeier (born 7 April 1982) is a Liechtenstein retired footballer, who played as a midfielder for Vaduz in the Swiss Super League. Born in Triesen, Burgmeier was a burgeoning footballer and keen skier, until he gave up the latter sport at 16 following a serious injury. Having been a youth player for Triesen, he started his professional career with Vaduz. Burgmeier won several Liechtensteiner Cups with Vaduz, who were promoted to the Swiss Challenge League in 2001, and played in the UEFA Cup. After two unsuccessful attempts to win promotion to the Swiss Super League, Burgmeier left for Aarau in 2005. He spent only one season with Aarau before a move to the previous season's runners-up Basel in 2006. His two seasons with Basel were broken up by a loan spell with Thun, before he moved to England with Darlington in August 2008, where he played for one year.
 Links: a. Swiss Super League b. Swiss Super League c. FC Vaduz d. FC Basel

Output: c


Input: Consider Input: Question: Between the other two artists whose works were used in performances that were part of a three-way tie for Outstanding Choreography, who has sold the most albums? Passage:Three songs have been used for the reality television series So You Think You Can Dance. "Ramalama (Bang Bang)" was used for a group performance on the sixth week of the second season. Contestants wore costumes and make-up to show them as zombies in a performance combining the 1968 horror film Night of the Living Dead with Michael Jackson's 1983 music video for "Thriller". At the 59th Primetime Emmy Awards, the performance was part of a three-way tie for Outstanding Choreography with a So You Think You Can Dance performance of Céline Dion's "Calling You", choreographed by Mia Michaels, and the television special Tony Bennett: An American Classic. "Night of the Dancing Flame" was used for a couple's jazz dance in the fourth week of the following season with contestants Neil Haskell and Lauren Gottlieb. The performances were choreographed by Wade Robson. Robson also did a number to "Ruby Blue" in the fifth season of So You Think You Can Dance.
 Links: a. So You Think You Can Dance (American TV series) b. Celine Dion c. Wade Robson d. Celine Dion


Output: b