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.

Ex Input:
Question: The architectural style of which the church was built was a popular architectural style in the region for how many years? Passage:The church is constructed in punch-dressed sandstone ashlar, and has slate roofs with inserted skylight windows. Its architectural style is Early English. The plan consists of a four-bay nave without aisles, a two-bay chancel with a north chapel and a south vestry, and a west tower. The tower is in three stages, with clasping buttresses, and contains paired west doorways, a clock face in a diamond-shaped surround, and pairs of louvred bell openings. At the top of the tower is an embattled parapet with octagonal corner pinnacles, and there are more pinnacles at the angles of the nave. The bays of the nave are separated by buttresses, and each bay contains a corbel-table and a pair of lancet windows. The sides of the chancel also contain paired lancet windows, and the east window consists of a triple stepped lancet in a blank arch. The north chapel is gabled, and contains a wheel window. The interior has been remodelled, but originally it contained a three-sided gallery on cast iron columns.


Ex Output:
b


Ex Input:
Question: How long was Bill Hewitt the director? Passage:The Billy Bishop Regional Airport in the nearby Municipality of Meaford was named after him. His modest gravesite can be visited in the city's Greenwood Cemetery by those willing to take the time to locate the stone. His boyhood home is now a museum dedicated to his life and to Canada's aviation history. The town was also the home of National Hockey League (NHL) Hall of Fame goaltender Harry Lumley and the artist Tom Thomson (buried in the nearby village of Leith). Surgeon Norman Bethune, an avowed communist and pioneer of public medicine who gained notoriety in his innovative medical work with the Chinese army during the Second Sino-Japanese War, is an alumnus of the Owen Sound Collegiate and Vocational Institute. Legendary hockey broadcaster Bill Hewitt was once sports director of the local AM radio station, CFOS. Thomas William Holmes, another Victoria Cross winner, was also from Owen Sound, and the city's armoury bears his name.


Ex Output:
a


Ex Input:
Question: What state did Klotz graduate college from? Passage:General Klotz entered the Air Force in 1973 as a distinguished graduate of the United States Air Force Academy. He has commanded a Minuteman missile squadron, a missile launch task force, an operations group, a missile wing and a numbered air force. The general's staff assignments include tours on the Air Staff, in the Office of the Secretary of Defense and at the State Department as a White House Fellow. He has also served on the faculty of the Air Force Academy, at NATO headquarters in Brussels, at the American Embassy in Moscow, Russia, and as the Director for Nuclear Policy and Arms Control with the National Security Council at the White House. He has also served as the vice commander, Air Force Space Command, Peterson Air Force Base, Colorado. Prior to assuming command of Air Force Global Strike Command, General Klotz was Assistant Vice Chief of Staff and Director, Air Force Staff, Headquarters U.S. Air Force, Washington, D.C.


Ex Output:

b