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: In what year did the Kansas City Kings become the Sacramento Kings? Passage:In 1982, at age 22, he became the TV and radio voice of the NBA's Kansas City Kings (now the Sacramento Kings). He then was a basketball announcer for his alma mater, the University of Kansas, for one year, then went on to call games for the NFL's Kansas City Chiefs from 198593 after several years hosting and producing surrounding pre-game and post-game programming (coincidentally, current Packers play-by-play voice Wayne Larrivee left the Chiefs position open when he began a thirteen-year run as the voice of the Chicago Bears). Harlan also split time with the University of Missouri (198689) calling football and basketball games, and worked as the play-by-play voice of the NBA's Minnesota Timberwolves for nine seasons (198998). On the network level, Harlan called NFL football for NBC in 1991, college football for ESPN in 199293, NFL for Fox from 199497, and joined Turner Sports in 1996 to cover NBA playoff games (he would begin calling games throughout the entire season in 1997, which he continues to do to this day). He began working for CBS in 1998.

Example Output: b

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 facade 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 facades 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 country did Bomhoff move to in 1957? Passage:Eduard Jan Bomhoff was born on 30 September 1944 in Amsterdam in a Old Catholic family as the son of Jacobus Gerardus Bomhoff a Minister and professor of literature and Riet van Rhijn. The family moved in 1957 to Leiden. Bomhoff attended the Stedelijk Gymnasium Leiden and went to Leiden University. After earning a Master of Economics there he received the Doctor of Philosophy degree in economics from the Erasmus University Rotterdam in 1979. Bomhoff worked as a lecturer in monetary policy there. He earned the rank of professor in 1981, and served as director of the Rochester-Erasmus Executive Master of Business Administration program from 1986 to 1989. He later served as a professor of finance at the Nyenrode Business Universiteit. In addition to his academic career, Bomhoff founded the institute in 1995, an economic research institute designed as an alternative to the official Bureau for Economic Policy Analysis. Bomhoff was also a columnist for the NRC Handelsblad from 1989 until 2002.

Example Output:
b