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: How many years had Shearman and Sterling been operating before Brinkhorst joined. 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:
a


Ex Input:
Question: Which manager of Port Vale FC had the best record during the 1950s? Passage:The first confirmed non-English manager during peacetime was Jock Cameron, who held the job for a year following World War I. Freddie Steele was a highly successful manager, who took the club to their second Third Division North title in 1953–54. In 1957 Scotsman Norman Low took the managerial reins, winning the Fourth Division title in 1958–59. The next manager of note was Sir Stanley Matthews, who was full-time manager for less than a year; his resignation followed a scandal involving players' pay. Widely considered to be the club's greatest ever manager, John Rudge led the "Valiants" to cup glory in 1993; his best success was the league however, securing three promotions in his sixteen-year reign. Bruno Ribeiro, from Portugal, became the first manager born outside of Britain to manage the club when he was appointed as manager in June 2016.


Ex Output:
a


Ex Input:
Question: How long had Dolph Briscoe been serving as governor of Texas for when Clements replaced him? Passage:On January 16, 1979, Clements succeeded Democrat Dolph Briscoe as governor of Texas. To win the position, he first defeated State Representative Ray Hutchison in the Republican primary by a lopsided vote of 115,345 to 38,268. Hutchison, a prominent Dallas attorney, is the second husband of Texas State Treasurer (1991–1993) and U.S. Senator Kay Bailey Hutchison, who served from 1993 to 2013. Clements enjoyed the support of former state party chairman Peter O'Donnell, organizer of the Draft Goldwater Committee in 1963-1964. O'Donnell became a key adviser to Clements, who won the general election held on November 8, 1978, by having narrowly defeated Democratic former Texas Supreme Court Chief Justice John Luke Hill, who had also served six years as state attorney general. Clements polled 1,183,828 votes (49.96 percent) to Hill's 1,166,919 votes (49.24 percent). The La Raza nominee, Mario C. Compean, and two other minor candidates split the remaining 18,942 votes. The more liberal Hill, who had also once been the appointed Secretary of State of Texas, had defeated Briscoe in the primary.


Ex Output:

b