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 president of Atlantic Records in 1961? Passage:Ain't She Sweet was an American album featuring four tracks recorded in Hamburg in 1961 by The Beatles featuring Tony Sheridan (except for the title song with vocal by John Lennon) and cover versions of Beatles and British Invasion-era songs recorded by the Swallows. As Atlantic Records only had rights to four Sheridan/Beatle recordings recorded by Polydor Records, they filled the rest of the album with Beatle and British Invasion cover songs. When this material was released by Atco Records, there were mono (catalogue number 33-169) and stereo (SD 33-169) editions. Atco also added additional drum overdubs to the four Sheridan cuts on top of the original drum tracks. American drummer Bernard Purdie claims to have performed overdubs of unspecified Beatles records, which would most likely have been for Ain't She Sweet, but this has never been officially confirmed.

Example Output: a

Example Input: Question: Are the two high schools that Keogan began coaching at located in the same state? Passage:The Minnesota Lake, Minnesota native attended University of Minnesota from 1909 to 1913. He began coaching high school varsities after his freshman year in college, guiding first Lockport High School (1910–1911) followed by Riverside High School (1911–1912). Meanwhile, he was also coaching several college basketball teams: Charles City College in Iowa (1909–1910), Superior State Teachers College in Wisconsin (1912–1914), Saint Louis University (1914–15) and the University of St. Thomas in St. Paul, Minnesota (1917–1918). During World War I he served at Great Lakes Naval Training Station. After briefly coaching Allegheny College in Meadville, Pennsylvania (1919–1920) and Valparaiso, Keogan arrived at University of Notre Dame. He served as head basketball and baseball coach, as well as assistant to the legendary football coach Knute Rockne. Keogan compiled a 327–96–1 at Notre Dame.

Example Output: b

Example Input: Question: How many subscribers did the newspaper Bild am Sonntag have the year that the president of German airline Air Berlin, in an interview with the newspaper stated that the risks for flights due to this volcanic haze were nonexistent? Passage:On 17 April 2010, the president of German airline Air Berlin, in an interview with the newspaper Bild am Sonntag, stated that the risks for flights due to this volcanic haze were nonexistent, because the assessment was based only on a computer simulation produced by the VAAC. He went on to claim that the Luftfahrt-Bundesamt closed German airspace without checking the accuracy of these simulations. Spokesmen for Lufthansa and KLM stated that during their test flights, required by the European Union, there were no problems with the aircraft. On the morning of 17 April Lufthansa moved 10 aircraft from Munich to Frankfurt at low altitude following visual flight rules. There were no problems reported and no sign of damage to the planes. The same day, an Airbus belonging to Ural Airlines attempted flying below the ash clouds from Moscow to Rimini. When the airplane was in Austrian airspace, the crew reported being low on fuel and diverted to Vienna, where the airplane landed safely.

Example Output:
b