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: Who was the older of the two - Joe Airey, or the original member of the radar team that Airey joined? Passage:Airey was born in Oldham, Lancashire on 25 August 1894. He joined Robert Watson-Watt in 1924, and was an original member of the radar team, responsible for masts and support equipment. He was Senior Technical Officer at Telecommunications Research Establishment. Alongside Arnold Wilkins, Airey is credited with having discovered Bawdsey Manor, Ordfordnessas a site for the Air Ministry department that was significant in the history of radar. In his book "Three Steps to Victory" Robert Watson-Watt proclaims Joe Airey's greatest constructional achievement as the installation of a mast atop the Great Pyramid at Cheops. During World War I, Airey was a member of the Dunsterforce in the Persia and the Middle East. By the time of his retirement, he was Station Engineer at the Royal Radar Establishment. He was appointed a Member of the Order of the British Empire (MBE) for his services by King George VI in his Birthday Honours on 14 June 1945. Airey died in Poole Dorset on 10 February 1976.

Example Output: b

Example Input: Question: Did the Earl of Kintore have any children when Anstruther-Gray became his Aide-de-Camp? Passage:He joined the Militia's Fife Artillery as a Sub-Lieutenant (Supernumerary) on 16 December 1876. He served for four years until he joined the 13th Hussars as a second lieutenant in 1880, served in India and Afghanistan in 1880-1881 and was promoted to lieutenant on 1 July 1881, before transferring to the Royal Horse Guards in 1885. He was Aide-de-Camp to the Earl of Kintore, Governor of South Australia, from 1889-1891, was promoted to captain on 30 December 1893, and to major on 1 May 1897. He served in South Africa from 1901-1902 where he was commandant of the district of Knysna in 1901, and Inspector of Concentration Camps in Transvaal in 1902. Following the end of the war in June 1902, he returned to the United Kingdom in the SS Dunottar Castle, which arrived at Southampton in July 1902. He later commanded 3rd Line Group, Scottish Horse during World War I.

Example Output: b

Example Input: Question: Which opera house Easterlin has performed in during his career is the oldest? Passage:Easterlin received his Bachelor of Music degree from the University of Miami and his Bachelor of Science degree from Florida International University, and after a successful career in corporate advertising, began his performing career in musical theatre before moving into opera. He went on to perform at many of America's leading opera houses and festivals, including the Lyric Opera of Chicago, San Francisco Opera, Los Angeles Opera, Seattle Opera, New York City Opera, Dallas Opera, the Opera Company of Philadelphia, the Ravinia Festival with the Chicago Symphony conducted by Daniel Barenboim for the opening night of the Centennial Season, and Spoleto Festival USA in a new production of Ariadne auf Naxos conducted by Emmanual Villaume. He made his debut at the Glimmerglass Opera Festival in the summer of 2009 as 'The Magician' in a new production of Menotti's The Consul. According to Opera News, Easterlin spent 200 hours learning magic tricks for this production, which included producing a live rabbit on stage. Another unusual role for him was Houston Grand Opera's 2006 all-puppet production of Humperdinck's opera Hansel and Gretel in which he sang the role of the Witch as well as operating her twelve-foot high puppet.

Example Output:
b