Definition: 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.
Input: Question: In what city did Barnett teach Maramduke Barton? Passage:John Francis Barnett was the son of John Barnett's brother, Joseph Alfred, also a professor of music. John Francis carried on the traditions of the family as a composer and teacher. He obtained a queen's scholarship at the Royal Academy of Music, studied under William Sterndale Bennett and developed into an accomplished pianist, visiting Germany to study in 1857 and playing Mendelssohn's Piano Concerto No. 2 in D minor at a Gewandhaus concert at Leipzig in 1860. His teachers at the Conservatoire in Leipzig included the great pianist Ignaz Moscheles, who had been a pupil of Beethoven. Back in Britain, Barnett enjoyed a successful career as a pianist for some years but concentrated increasingly on composition and teaching. He became noticed as a composer with his symphony in A minor (1864), and followed this with a number of compositions for orchestra, strings and piano. His cantata The Ancient Mariner premiered at Birmingham in 1867, and another, Paradise and the Peri, in 1870, both successfully. In 1873 his most important work, the oratorio The Raising of Lazarus, was written, and in 1876 produced at Hereford. During this period, Barnett also composed several other minor cantatas and piano pieces, and he took an active part as a professor at the Guildhall School of Music and one of the founder-professors of the Royal College of Music, where his students included Marmaduke Barton.


b