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: In what city is the university at which Ginjaar served as Chairman of the Education Board? Passage:After the election of 1977 Ginjaar was appointed as Minister of Health and Environment in the Cabinet Van Agt-Wiegel, taking office on 19 December 1977. Ginjaar served as acting Minister for Science Policy from 1 April 1979 until 3 May 1979 following the death of Rinus Peijnenburg. In December 1980 Ginjaar announced that he wouldn't stand for the election of 1981 but wanted to run for the Senate. Ginjaar was elected as a Member of the Senate after the Senate election of 1981, taking office on 25 August 1981 serving as a frontbencher chairing the and the and spokesperson for the Environment, Higher Education and Agriculture. The Cabinet Van Agt–Wiegel was replaced by the Cabinet Van Agt II following the cabinet formation of 1981 on 11 September 1981. Ginjaar also served as Chairmen of the People's Party for Freedom and Democracy from 29 November 1986 until 4 October 1991. Ginjaar served as a distinguished professor of Medical ethics at the Utrecht University from 1 September 1982 until 1 January 1986 and also served as Chairman of the Education board of the Utrecht University from 10 September 1982 until 1 January 1986 and a distinguished professor of Climatology and Medical research at the State University of Limburg from 1 March 1990 until 1 September 1994. Ginjaar was selected as Parliamentary leader of the People's Party for Freedom and Democracy in the Senate following the election of Frits Korthals Altes as President of the Senate, serving from 11 March 1997 until 14 September 1999. In November 2002 Ginjaar announced his retirement from national politics and that he wouldn't stand for the Senate election of 2003 and continued to serve until the end of the parliamentary term on 10 June 2003.
 Links: a. Medical research b. Utrecht University c. Utrecht University d. Ministry of Agriculture, Nature and Food Quality
Example Output: b

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 Hindu–German 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: When was the play by Richard Strauss written? Passage:He was an ensemble member of Theater Basel from 1955 to 1957. He was then a member of the Städtische Bühnen Oberhausen (1958–1959), Stadttheater Gießen (1959–1960), Opernhaus Kiel (1960–1962) and the Staatstheater Kassel (1962–1965). In Kassel, he appeared as Ceccho in the world premiere of the complete version of Henze's König Hirsch on 10 March 1963, and as the Father in Ján Cikker's Abend, Nacht und Morgen on 5 October 1963. He sang at the Opernhaus Dortmund from 1965 to 1968, where he appeared as Valzacchi in Der Rosenkavalier by Richard Strauss in the opening performance of the new opera house on 3 March 1966. Other roles there included the Narrator in Orff's Der Mond, Goro in Puccini's Madama Butterfly, the Knusperhexe in Humperdinck's Hänsel und Gretel, Wenzel in Smetana's Die verkaufte Braut and Wolfgang Capito in Hindemith's Mathis der Maler. He took part in the premiere of Eli by Walter Steffens in 1967.
 Links: a. Der Rosenkavalier b. König Hirsch c. Walter Steffens (composer) d. Hansel and Gretel (opera)
Example Output:
a