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.

Example Input: Question: How long was Frank Pick the general manager? Passage:Through his involvement with the Design and Industries Association Holden met Frank Pick, general manager of the Underground Electric Railways Company of London (UERL). Holden at the time had no experience in designing for transport, but this would change through his collaboration with Pick. In 1923, Pick commissioned Holden to design a façade for a side entrance at Westminster Underground station. This was followed in 1924 with an appointment to design the UERL's pavilion for the British Empire Exhibition. Also in 1924, Pick commissioned Holden to design seven new stations in south London for the extension of the City and South London Railway (now part of the Northern line) from Clapham Common to Morden. The designs replaced a set by the UERL's own architect, Stanley Heaps, which Pick had found unsatisfactory. The designs reflect the simple modernist style he was using in France for the war cemeteries; double-height ticket halls are clad in plain Portland stone framing a glazed screen, each adapted to suit the street corner sites of most of the stations. The screens feature the Underground roundel made up in coloured glass panels and are divided by stone columns surmounted by capitals formed as a three-dimensional version of the roundel. Holden also advised Heaps on new façades for a number of the existing stations on the line and produced the design for a new entrance at Bond Street station on the Central London Railway.

Example Output: a

Example Input: Question: What is the name of the stadium that the team plays at that signed Rentería in 1992? Passage:Born in Barranquilla, Colombia, Rentería was signed by the Florida Marlins in 1992. He debuted with them in 1996, and he finished second to Todd Hollandsworth in Rookie of the Year Award balloting. In 1997, his RBI single off Charles Nagy in the eleventh inning of Game 7 of the 1997 World Series won the first World Series in Marlins' history. He was selected to his first All-Star Game in 1998, and he was traded to the St. Louis Cardinals following the season. He was the starting shortstop for the Cardinals for six years, and he was selected to the All-Star Game in 2000, 2003, and 2004. In 2002 and 2003 he won the Silver Slugger and Gold Glove Awards. Following the 2004 season, he signed with the Boston Red Sox. After a year with them, he was traded to the Atlanta Braves. He was selected to another All-Star Game in 2006, but following the 2007 season he was traded to the Detroit Tigers. After 2008, he became a free agent, and he signed with the San Francisco Giants. In the 2010 World Series, Rentería won the World Series Most Valuable Player Award after he hit game-winning home runs in Game 2 and Game 5. He became a free agent again after the season, and he signed with the Cincinnati Reds.

Example Output: b

Example Input: Question: What is the age difference between the man De Boer replaced in February of 1972 and the man who replaced De Boer during his medical leave of absense? Passage:De Boer became a Member of the House of Representatives after resignation of Joop Bakker, taking office on 16 February 1972 serving as a frontbencher chairing the and the and spokesperson for Small business, Civil Service, Fisheries, Culture, Media and Military Personnel. De Boer also Chairman of the Anti-Revolutionary Party from 13 December 1975 until 27 September 1980. After the election of 1977 the Christian Democratic Appeal and the People's Party for Freedom and Democracy (VVD) formed the Cabinet Van Agt-Wiegel, De Boer and several Christian Democratic Appeal Members of the House of Representatives were critical on the coalition agreement and formed a informal caucus in there own parliamentary group called the  that supported the cabinet only with confidence and supply. After the election of 1981 De Boer was appointed as State Secretary for Culture, Recreation and Social Work the Cabinet Van Agt II, taking office on 11 September 1981. The Cabinet Van Agt II fell just seven months into its term on 12 May 1982 after months of tensions in the coalition and continued to serve in a demissionary until the first cabinet formation of 1982 when it was replaced by the caretaker Cabinet Van Agt III with De Boer appointed as Minister of Culture, Recreation and Social Work, taking office on 29 May 1982. After the election of 1982 De Boer returned as a Member of the House of Representatives, taking office on 16 September 1982. De Boer took a medical leave of absence on 11 October 1982 after which Minister of Health and Environment Til Gardeniers-Berendsen served as acting Minister of Culture, Recreation and Social Work. Following the second cabinet formation of 1982 De Boer was not giving a cabinet post in the new cabinet, the Cabinet Van Agt III was replaced by the Cabinet Lubbers I on 4 November 1982 and he continued to serve in the House of Representatives as a frontbencher and spokesperson for Welfare, Sport, Social Work and Culture.

Example Output:
b