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: What institution did Fukuyama work for the year START II was signed? Passage:In August 1991, hard-line Communists launched a coup against Gorbachev; while the coup quickly fell apart, it broke the remaining power of Gorbachev and the central Soviet government. Later that month, Gorbachev resigned as general secretary of the Communist party, and Russian president Boris Yeltsin ordered the seizure of Soviet property. Gorbachev clung to power as the President of the Soviet Union until December 1991, when the Soviet Union dissolved. Fifteen states emerged from the Soviet Union, and of those states, Russia was the largest and most populous. Bush and Yeltsin met in February 1992, declaring a new era of "friendship and partnership". In January 1993, Bush and Yeltsin agreed to START II, which provided for further nuclear arms reductions on top of the original START treaty. The collapse of the Soviet Union prompted reflections on the future of the world following the end of the Cold War; one political scientist, Francis Fukuyama, speculated that humanity had reached the "end of history" in that liberal, capitalist democracy had permanently triumphed over Communism and fascism. Meanwhile, the collapse of the Soviet Union and other Communist governments led to post-Soviet conflicts in Central Europe, Eastern Europe, Central Asia, and Africa that would continue long after Bush left office.

Example Output: a

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: What was the population of Las Vegas in 1979? Passage:Beginning in 1974, Bryant began to state that he was receiving revelations from Jesus. He claimed that "John the Beloved" had visited him as an angel and instructed him to form an "Order of the Ancients". In 1975 he was taken in vision to the City of Enoch, where AUB founder Joseph White Musser and Latter Day Saint movement founder Joseph Smith ordained him to the presidency of the church and the high priesthood. At this time, Bryant claimed to be the "One Mighty and Strong" prophesied of in the Doctrine and Covenants. In 1975, he founded a church as the Church of Christ Patriarchal, which later was renamed the Evangelical Church of Christ. In 1979, Bryant's group established a communal settlement at the Fair Haven Ranch near Las Vegas, Nevada. During his time as a leader of the group, Bryant had six wives and taught his sect about drug experimentation and heterosexual and homosexual group sex. According to sources, sect members had sexual relations during the group's temple ceremonies. In 1981, the group lost the Fair Haven Ranch when they were unable to keep up on mortgage payments. As a result, Bryant, five of his six wives, and some of the members of the group relocated to Marion County, Oregon, near Salem.

Example Output:
a