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: Which rolling stock did the Turboliner replace? Passage:Following its takeover of most passenger rail service in the United States on May 1, 1971, Amtrak retained the Abraham Lincoln as a daily Chicago-St. Louis service, operating in tandem with the GM&O's old Limited. In November of that year Amtrak extended both the Abraham Lincoln and the Limited (now known as the Prairie State) through Chicago to Milwaukee, Wisconsin. In October 1973, Amtrak replaced the rolling stock with the new French-built Turboliner; as part of this change the trains were re-branded as Turboliners and truncated to Chicago. In February 1976 Amtrak returned conventional rolling stock to the route and revived the Abraham Lincoln name along with the Ann Rutledge. Amtrak added the State House to the Chicago-St. Louis corridor in 1977. Also in 1977, Amtrak extended the Abraham Lincoln to Kansas City and renamed it the Ann Rutledgea name that had briefly disappeared from the timetable in 1976-77 when Amtrak extended the Inter-American to Chicago. Today service between Chicago and St. Louis is handled by the "Lincoln Service".

Example Output: b

Example Input: Question: Who did Ronald Plasterk defeat in the 2010 election? Passage:After the election of 2006 Plasterk was appointed as Minister of Education, Culture and Science in the Cabinet Balkenende IV, taking office on 22 February 2007. The Cabinet Balkenende IV fell on 20 February 2010 after tensions in the coalition over the extension of the Dutch involvement in the Task Force Urozgan of the International Security Assistance Force (ISAF) in Afghanistan and continued to serve in a demissionary capacity until the Labour Party cabinets members resigned on 23 February 2010. Plasterk was elected as a Member of the House of Representatives after the election of 2010, taking office on 17 June 2010 serving as a frontbencher and spokesperson for Finances. After the Leader of the Labour Party and Parliamentary leader of the Labour Party in the House of Representatives Job Cohen announced that he was stepping down as Leader and Parliamentary leader in the House of Representatives following increasing criticism on his leadership, Plasterk announced his candidacy to succeed him. Plasterk lost the leadership election to fellow frontbencher Diederik Samsom on 16 March 2012. After the election of 2012 Plasterk was appointed as Minister of the Interior and Kingdom Relations in the Cabinet Rutte II, taking office on 5 November 2012. Plasterk took a medical leave of absence from 29 June 2016 until 16 September 2016 during which Minister for Housing and the Central Government Sector Stef Blok served as acting Minister of the Interior and Kingdom Relations. On 10 September 2016 Plasterk announced announced his retirement from national politics and that he wouldn't stand for the election of 2017. The Cabinet Rutte II was replaced by the Cabinet Rutte III following the cabinet formation of 2017 on 26 October 2017.

Example Output: a

Example Input: Question: In what year was the university established where Friedrich Hornemann studied Arabic. Passage:Hornemann was born in Hildesheim, a city in Lower Saxony, Germany, located about 30km southeast of Hannover. He was a young man when, early in 1796, he offered his services to the African Association of London as an explorer in Africa. The African Association sent him to the University of Gottingen to study Arabic and otherwise prepare for an expedition from the east into the unknown regions of North Africa. In September 1797 he arrived in Egypt, where he continued his studies. When the country was invaded by the French, he was confined in the citadel of Cairo to preserve him from the fanaticism of the populace. Liberated by the French, he received the patronage of Bonaparte. On 5 September 1798 he joined a caravan returning to the Maghreb from Mecca, attaching himself to a party of Fezzan merchants who accompanied the pilgrims. As an avowed Christian would not have been permitted to join the caravan Hornemann assumed the character of a young mamluk trading to Fezzan. He then spoke, but indifferently, both Arabic and Turkish, and he was accompanied as servant and interpreter by Joseph Freudenburg, a German convert to Islam, who had thrice made the pilgrimage to Mecca. Travelling by way of the oases of Siwa and Aujila, a black rocky desert was traversed to Temissa in Fezzan. Murzuk was reached on 17 November 1798.

Example Output:
b