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: Is the club Charles played against in 1883 still active? Passage:Educated at Wellington College and later attending Trinity Hall, Cambridge, Willock made a single first-class appearance for Cambridge University against the Marylebone Cricket Club at Fenner's in 1883. He was dismissed in Cambridge University's first-innings of 100 for a duck by Wilfred Flowers, while in the Marylebone Cricket Club's first-innings of 159 he took the wickets of Billy Gunn and Percy de Paravicini to finish with figures of 2/18 from 28 overs. In the University's second-innings of 65, he was once again dismissed for a duck by Flowers, while in the Marylebone Cricket Club's successful chase, he dismissed Gunn for a second time. Later that season he made a single first-class appearance for Sussex against Hamshire at Day's Antelope Ground. In Hampshire's first-innings of 110, he bowled ten wicketless overs which conceded 5 runs, while he ended Sussex's first-innings of 94 unbeaten on 8. In Hampshire's second-innings of 180, he bowled five wicketless overs which conceded 9 runs. In Sussex's second-innings of 165, he was dismissed for 6 runs by William Dible, with Hampshire winning the match by 31 runs.

Example Output: b

Example Input: Question: How many soldiers did Britain send to World War I the year Roebuck arrived on the Western Front? Passage:As a boy, Roebuck worked as a trammer and after being sentenced to one month's imprisonment for stealing a watch in 1904, he enlisted in the York and Lancaster Regiment. Over the next seven years, he was stationed in India and Ireland and was promoted to lance corporal, but was demoted back to private in 1910 for "misconduct". He married in 1908 and had two children. Roebuck was discharged into the reserves in 1912 and likely returned to work as a miner prior to becoming a professional footballer in 1913. After Britain's entry into the First World War in August 1914, he was called up by the York and Lancaster Regiment and arrived on the Western Front in September 1914. On 18 October 1914, Roebuck recorded as "presumed dead" after an attack near Beaucamps-Ligny during the Race to the Sea. His death was confirmed by two comrades in January 1915. Roebuck is commemorated on the Ploegsteert Memorial to the Missing.

Example Output: a

Example Input: Question: Who is the owner of the last CFL team that Walker played for? Passage:Chevon Walker (born May 9, 1987 in Montego Bay, Jamaica) is a former professional Canadian football running back and kick returner for the Winnipeg Blue Bombers of the Canadian Football League. He played NCAA football for the Sioux Falls Cougars. He played two years of his career as a professional football player in the Canadian Football League for the Hamilton Tiger-Cats. In 2014, the Ottawa Redblacks selected him in the expansion draft. He started the 2015 season with the Ottawa Redblacks before he was released on August 28, 2015. On September 1, 2015, it was announced that Walker had signed with the Winnipeg Blue Bombers. Chevon Walker has over 1000 rushing yards and seven touchdowns in three years of professional play.

Example Output:
b