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: Consider Input: Question: Which ship had been in service longer at the time when he was on them, the one where he still held sub-lieutenant rank or the one where David had been promoted to full lieutenant? Passage:He was assigned as a midshipman on 1 May 1929 after finishing top of his class in five subjects. In 1930 he was assigned to the battleship Marlborough, part of the Third Battle Squadron; and the following year to the battlecruiser in September 1931 on which he served with fellow midshipman, and future vice admiral, Peter Gretton. While serving on the ship, Wanklyn was promoted to acting sub-lieutenant (the equivalent of an army second lieutenant) on 1 January 1932. Soon afterwards he moved to the naval gunnery school - HMS Excellent - at Whale Island, Portsmouth to learn more about naval navigation to qualify for his second ring at the rank of lieutenant. In February 1933 he moved to HMS Dolphin and was promoted to lieutenant on 1 February 1933.

Output: b

Input: Consider 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.

Output: a

Input: Consider Input: Question: How many teams are in the organization that Stevens became the third youngest coach to have a 30 win season in? Passage:Born and raised in Zionsville, Indiana, Stevens starred on the Zionsville Community High School basketball team, setting four school records. After high school, he attended DePauw University, where he played basketball and earned a degree in economics. He made the all-conference team multiple times and was a three-time Academic All-America nominee. He transitioned into coaching after quitting his job at Eli Lilly and Company, joining the basketball program at Butler University as a volunteer prior to the 200001 season. He was promoted to a full-time assistant coach the following season. After five seasons in the role, he assumed the position of head coach on April 4, 2007, after Todd Lickliter left to coach the Iowa Hawkeyes. In his first year, Stevens led Butler to 30 wins, becoming the third-youngest head coach in NCAA Division I history to have a 30-win season.
Output: a