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: How long had the Atlanta Braves been a team when the Mets swept them in a National League Championship Series? Passage:The Mets went on to sweep the Atlanta Braves in the 1969 National League Championship Series, but were heavy underdogs heading into the 1969 World Series against the Baltimore Orioles. Following a 4-1 loss in the series opener with Cy Young award winner Seaver on the mound, it seemed as if the Mets had little chance against the Orioles. However, the Mets bounced back, winning the next four games to capture their first world championship. Besides catching every inning in the post-season, Grote contributed offensively with a single in Game Two to keep a ninth inning rally alive and Al Weis followed with the game-winning hit. With Game Four tied, Grote doubled to start the tenth inning, then pinch runner Rod Gaspar scored the winning run when an errant throw hit J.C. Martin on the wrist. With Grote calling the pitches, the Mets pitching staff held the Orioles hitters to a .146 batting average during the series.


Output: a


Input: Consider Input: Question: When was Beloit college founded? Passage:Mikva is the daughter of Judge Abner Mikva and Zorita ("Zoe") (nee Wise) Mikva. Mikva and her two sisters were raised in Evanston, Illinois, and attended public schools. She earned her B.A. in theater at Beloit College in 1974, working after graduation as a paralegal at the law firm Jenner & Block. She then attended Northwestern University Pritzker School of Law, graduating cum laude and Order of the Coif in 1980. Following graduation, she served as law clerk to Judge Prentice Marshall of the United States District Court for the Northern District of Illinois, and then to Justice William J. Brennan, Jr., of the United States Supreme Court. After her clerkships, Mikva practiced law in Chicago as a partner at Abrahamson Vorachek & Mikva and Seliger & Mikva, specializing in civil rights and employment law, and in criminal defense with Patrick A. Tuite & Associates. 


Output: b


Input: Consider Input: Question: How many aircraft are part of the military branch that Coward was commissioned into in 1937? Passage:Coward was commissioned into the Royal Air Force as an acting pilot officer (on probation) on 28 January 1937. He joined No. 19 Squadron based at RAF Duxford as a pilot flying the Gloster Gauntlet, a single seat biplane. His commission was confirmed and he was regraded as a pilot officer on 16 November 1937. Having shown his artistic skill through caricatures of his comrades, he was tasked with painting the squadron badge on the canvas of the biplanes. However, after weeks of work, the Munich Crisis occurred and the biplanes, and their recently painted badges, were painted over in camouflage. His squadron was the first to be equipped with the Supermarine Spitfire, which entered service on 4 August 1938. He was promoted to flying officer on 16 June 1939. 



Output: a