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: How long was the fortification that the German Army retreated to? Passage:Adair fought in the First World War. He joined the British Army, receiving his commission as a probationary second lieutenant on 2 May 1916 in the 5th (Reserve) Battalion of the Grenadier Guards. From January 1917 onwards he served in the trenches of the Western Front in France and Belgium as part of the 2nd Company, 3rd Battalion, Grenadier Guards, with the rank of lieutenant. The battalion was part of the 2nd Guards Brigade of the Guards Division. Adair's first major battle was in the pursuit of the retreating German Army to the Hindenburg Line. The division then took part in the Battle of Passchendaele. Adair, however, took no part in the battle, due to an injury sustained in a bicycle accident in early July 1917. He returned to the battalion in January 1918.

Ex Output:
b

Ex Input:
Question: What year did Eisner's "Mad Dog" ad for Zima originally air? Passage:Eisner had used some of Digital Domain's processors to render images for his film, and the company suggested he meet with some commercial production houses. Thus began his career as a director of commercials, and after only a year-and-a-half, Eisner had directed 14 high-profile spots. His first commercial was Budweiser's Powersurge, which aired during the 1997 Super Bowl. He also took the helm for Rold Gold pretzels' "Comrades" starring Jason Alexander, which featured Pretzel Boy on a rescue mission to the Mir space station. Eisner's two anti-smoking spots for the California Department of Health Services, "Gala Event" and "Funeral", were selected as Best Spots in back-to-back issues of Adweek. In addition, Eisner's "Mad Dog" for Coors's Zima aired during the Seinfeld finale and was chosen by USA Today "Ad Meter" as the #1 spot. He has also done commercials for Sony, Sega and Coca-Cola.

Ex Output:
b

Ex Input:
Question: How many total goals did Hubbick score for Burnley during the 1936 season? Passage:After leaving school Hubbick worked as a coal miner. In his free time he played football for Jarrow, Blyth Spartans and Spennymoor United before signing for professional club Burnley in 1935. Hubbick made his debut for Burnley on 19 October 1935 in a 10 win over Nottingham Forest and went on to make 32 appearances for the club that season. He scored his first goal for the club in a 22 draw with Manchester United on 10 April 1936. Hubbick kept his place in the side going into the 193637 season and missed only one match in the first five months of the campaign. He played his last Burnley match on 6 February 1937 in a 31 defeat to Southampton at Turf Moor. In February 1937, he left Burnley and joined Bolton Wanderers, moving up from the Second Division to the First Division.

Ex Output:
a