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: When was the house that was later converted into a public library built? Passage:The George S. Houston Historic District is a historic district in Athens, Alabama. The district lies to the west and north of the public square, and features homes of some of the town's most prominent residents. Development began in the district soon after the town was founded in 1818; there are five homes remaining from the antebellum period. The district saw moderate growth between the Civil War and the early 1900s, most of which are Queen Anne and Victorian styles. The majority of houses in the district were constructed between 1908 and 1939. As the need for housing in the town grew, larger antebellum lots were subdivided and new construction was added. Larger houses tended to be American Foursquares, while middle-class houses were bungalows and cottages, some with Tudor Revival and Colonial Revival details. The district is entirely residential, with the exception of the First Methodist Church, built in 1925 in Neoclassical style; 400 North Jefferson was built in 1935 as a hospital, but later converted to apartments. Other notable properties in the district include the George S. Houston House, which was converted into a public library. The district was listed on the National Register of Historic Places in 1989.

Example Output: b

Example Input: Question: How long had Notre Dame been in existence on the year that Sean Reardon got his B.A. in liberal arts? Passage:Sean Reardon earned a B.A. in liberal arts from the University of Notre Dame in 1986, after which he taught for four years at Red Cloud Indian School (South Dakota) and Moorestown Friends School (New Jersey) before returning to Notre Dame and obtaining a M.A. in peace studies in 1991. After his M.A., Reardon pursued his education at the Harvard Graduate School of Education, from which he obtained an M.Ed. and an Ed.D. in educational administration, planning and social from in 1992 and 1997. Following his graduation, Reardon first briefly worked as a postdoctoral researcher at Harvard's Children Initiative on the evaluation of programmes for children (1998-99) and then became an assistant professor of education and sociology at Pennsylvania State University, before moving to Stanford University in 2004. At Stanford, Reardon was promoted from associate professor to full professor in 2012 and has been the Endowed Professor of Poverty and Inequality in Education since 2014. Additionally, he serves at Stanford as Director of the Stanford Interdisciplinary Doctoral Training Program in Quantitative Education Policy Analysis and as a senior fellow of the Stanford Institute for Economic Policy Research. Reardon was elected to the National Academy of Education in 2014 and sits on the Board of Directors of the Society for Research on Educational Effectiveness. Reardon performs or has performed editorial duties for many academic reviews in education, including Sociology of Education, Educational Evaluation and Policy Analysis, Journal of Economic Inequality, American Educational Research Journal, Journal of Research on Educational Effectiveness, and Educational Researcher.

Example Output: b

Example Input: Question: When did the sovereign entity that built the Victor Emmanuel Railway begin? Passage:The Victor Emmanuel Railway, which included both the Culoz–Modane railway across Savoy and the Turin–Modane railway across Piedmont, was largely built in the 1850s by the Kingdom of Sardinia and named after its king, Victor Emmanuel II. Until 1860 Sardinia included both Savoy and Piedmont. The line from Turin to Susa was inaugurated on 22 May 1854. Work on the tunnel began on 31 August 1857 and was completed in September 1871. Work had begun on the line between Bussoleno and Bardonecchia in 1867 and was completed at the same time as the tunnel. The tunnel and line were opened on 16 October 1871. By that time, the Savoy side of the tunnel had become part of France. The decision of the engineers to begin the line at Bussoleno in order to reduce the gradient on the climb near Meana was much criticized for bypassing the city of Susa, which was left isolated on a short branch line. The opening of the tunnel also led to the closure of the short-lived Mont Cenis Pass Railway. In 1865 the line became part of the network of the Società per le strade ferrate dell'Alta Italia (Upper Italian Railways, SFAI) on its foundation in 1865 and was taken over by the Rete Mediterranea (Mediterranean Network) in 1885. Finally in 1905 it became part of the Ferrovie dello Stato network.

Example Output:
b