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: Is the jail where Abani escaped from still in operation? Passage:In 1914, Mukherji met Rash Behari Bose and joined the revolutionary movement. In 1915, he was sent to Japan to acquire weapons for the revolutionaries. According to British intelligence reports, he was active in the HinduGerman conspiracy. In September 1915, while on his return journey to India, he was arrested in Singapore and incarcerated at the Fort Canning prison there, where he remained until he escaped in the autumn of 1917. The exact details of his escape are unclear. Mukherji managed to reach Java in the Dutch East Indies, where he stayed until the end of 1919, living under the name of Dar Shaheer. In Java, he was in contact with Indonesian and Dutch revolutionaries and became a communist. He also travelled to Amsterdam and back. In Amsterdam, he met S.J. Rutgers, who recommended him as a delegate to the Second Congress of the Communist International.
Links: a. Amsterdam b. S. J. Rutgers c. Communist International d. Fort Canning Hill
Example Output: d

Example Input: Question: Who won the World Cup where the Costa Rican team had a prominent performance? Passage:Since the late 1980s, the team has continuously been visible as a solidly competitive side, with a prominent performance in the 1990 FIFA World Cup in Italy, making it to the knockout stage in their debut after finishing second in their group during the first phase, below Brazil. They also managed to qualify for the 2002 and 2006 FIFA World Cups. In 2014, Costa Rica made their best performance in history by finishing first in their group that consisted of three former World Cup champions: Uruguay, Italy, and England. During the Round of 16 they defeated Greece 53 via a penalty shootout after a 11 draw. Moreover, during the match against a much better team, Navas saved more than 15 shots due to the Costa Rican very weak defense. The match was characterized as "Navas vs Greece". They reached the quarterfinals for the very first time as the Ticos were defeated by the Netherlands also in a penalty shootout (34) after a scoreless draw on 5 July. Their 2018 World Cup campaign ended in a 4th place group stage exit with their only point coming from a 2-2 draw vs Switzerland.
Links: a. 2006 FIFA World Cup b. 1990 FIFA World Cup c. 2006 FIFA World Cup d. Keylor Navas
Example Output: b

Example Input: Question: How many judges comprise the body that Gyles served as an additional member of? Passage:After practising as a solicitor, Gyles was admitted to the New South Wales Bar in 1964 and took silk in 1975. He acted as Master in Equity in 1975 and as a Judge of the Supreme Court of New South Wales in 1989. Between 1982 and 1984 he acted as Special Commonwealth Prosecutor into Bottom of the harbour tax avoidance, and between 1990 and 1992 he was Royal Commissioner into the Building Industry in New South Wales. He has been President of both the New South Wales and Australian Bar Associations. Gyles was a Judge of the Federal Court of Australia from 1999 to 2008 and then an Acting Judge of the Court of Appeal of the Supreme Court of New South Wales. He has served as an additional judge of the Supreme Court of the Australian Capital Territory, a Deputy President of the Australian Competition Tribunal, a Presidential Member of the Administrative Appeals Tribunal and an Arbitrator of the Court of Arbitration for Sport. In December 2014 Gyles was named the Independent National Security Legislation Monitor.
Links: a. Supreme Court of the Australian Capital Territory b. Royal commission c. Royal commission d. Court of Arbitration for Sport
Example Output:
a