In this task, you're given a question, along with a context passage. The passage will not have a direct answer to the question, but can include some information and a clue for the answer. Assuming you can only obtain information about one entity in the passage, your job is to determine whether information from the passage can be used to answer the question. Indicate your choice as 'a' for Yes or 'b' for No.

Ex Input:
Question: In which country did Brinkhorst receive his Bachelor of Laws degree? Passage:Brinkhorst attended the Christian Gymnasium Sorghvliet in The Hague from June 1945 until June 1954 and applied at the Leiden University in June 1954 majoring in Law and obtaining an Bachelor of Laws degree in June 1956 before graduating with an Master of Laws degree in July 1959. Brinkhorst applied at the Columbia University in New York City in August 1959 for a postgraduate education in Political science and obtained an Bachelor of Social Science degree before graduating with an Master of Social Science in September 1961. Brinkhorst worked as a paralegal at Shearman & Sterling in New York City from September 1961 until December 1962. Brinkhorst worked as a researcher at the Leiden University from December 1962 until January 1967 and as an associate professor of International law at the Leiden University from April 1965 until January 1967 and as a professor of International law, International relations and European law at the University of Groningen from January 1967 until 11 May 1973. Brinkhorst served on the Provincial-Council of Groningen from July 1970 until August 1971. After the election of 1972 Brinkhorst was appointed as State Secretary for Foreign Affairs in the Cabinet Den Uyl, taking office on 19 December 1977. The Cabinet Den Uyl fell on 22 March 1977 after four years of tensions in the coalition and continued to serve in a demissionary capacity. Brinkhorst was elected as a Member of the House of Representatives after the election of 1977, taking office on 8 June 1977 but he was still serving in the cabinet and because of dualism customs in the constitutional convention of Dutch politics he couldn't serve a dual mandate he subsequently resigned as State Secretary on 8 September 1977. After the election of 1981 the Leader of the Democrats 66 and Parliamentary leader of the Democrats 66 in the House of Representatives Jan Terlouw was appointed as Deputy Prime Minister and Minister of Economic Affairs in the Cabinet Van Agt II and Brinkhorst was selected as his successor as Parliamentary leader in the House of Representatives on 11 September 1981. After the Leader of the Democrats 66 Terlouw announced that he was stepping down as Leader following a big loss in the election of 1982 the Democrats 66 leadership appointed Brinkhorst as his successor on 8 September 1982. In October 1982 Brinkhorst was nominated as Ambassador of the European Union to Japan, he resigned as Leader and as Parliamentary leader and as a Member of the House of Representatives on 11 November 1982 and was installed as Ambassador, taking office on 1 December 1982. In December 1986 Brinkhorst was nominated as Director-General of the Scientific Committee on Consumer Safety of the European Commission, he resigned as Ambassador the same day he was installed as Director-General, serving from 1 January 1987 until his resignation 19 July 1994.

Ex Output:
b

Ex Input:
Question: How long had Jeffrey Ullman been teaching at Stanford the year Mairson got his B.A.? Passage:Mairson received a B.A. in Mathematics from Yale University in 1978 and a Ph.D. in Computer Science from Stanford University in 1984 under the supervision of Jeffrey Ullman. His Ph.D. thesis, The Program Complexity of Searching a Table, won the Machtey Award at the 1983 IEEE Symposium on Foundations of Computer Science (FOCS). Mairson was a Postdoctoral researcher at INRIA Rocqencourt from 1984 to 1985, at Stanford University in 1985, and at the University of Oxford in 1986. He held a Visiting Professor position from 1999 to 2001 at Boston University. From 2005 to 2007, Mairson has served as the Chair of the Faculty Senate at Brandeis. He is currently an Associate Editor of the journal Logical Methods in Computer Science and Information and Computation, and sits on the editorial board of Higher-Order and Symbolic Computation.

Ex Output:
b

Ex Input:
Question: Between the king's wife and his brother, which one died first? Passage:Warwick, however, was increasingly discontented with his former protege, King Edward. Not only did he disagree with the pro-Burgundian and anti-French foreign policy Edward was pursuing, but the king had made an unpopular marriage to Elizabeth Woodville, whom Warwick appears to have considered of parvenu stock. Edward's younger brother George of Clarence was also, for his own reasons, turning against Edward, and by the late 1460s, he and Warwick were in political alliance against the King. In late 1467, Warwick withdrew from the court to the north and his Yorkshire estates. George was equally dissatisfied with his lot under his brother's regime, particularly as Edward had recently forbidden a marriage between George and Warwick's eldest daughter, Isabel Neville. The king had also recently dismissed Warwick and John's brother George from the chancellorshipin (says historian Charles Ross) a "pointed" manner.

Ex Output:
b