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: What was Sander's win/loss record as a senior at Tennessee-Chattanooga? Passage:Sanders started his college career at Southern Methodist University, throwing for 1,728 yards and 12 touchdowns in 20 games, including 10 starts. He then transferred to Tennessee-Chattanooga. While there, Sanders started 22 games for the Mocs. He set school records for passing yards (7,230), touchdowns (49), completions (584), 200-yard passing games (22), 300-yard passing games (12) and total offense (7,247). Sanders was one of 16 finalists for the Walter Payton Award recognizing best player in NCAA Division I-AA football his senior season. He led the Southern Conference in all major passing categories as senior, throwing for 3,691 yards while also tying a school record with six touchdown passes against Mississippi Valley State. All 6 Touchdown receptions was to Cos DeMatteo which broke Jerry Rice's single game receiving record for Touchdowns in a game for Division 1-AA/FCS. It was also Jerry Rice's alma mater. The two were a record breaking duo at Chattanooga. Sanders also connected with DeMatteo for 13 completions for 207 yards and 3 touchdown passes at Louisville, a Division 1-A/FBS opponent. Sanders passed 367 yards and 3 touchdowns in the game. Louisville won the game 58-30,but was a career day for the duo vs a much more supreme Conference USA team. Sanders was an All-American honorable mention as a junior with 3,539 yards and 27 touchdown passes.

Example Output: a

Example Input: Question: How many years passed between the First Carlist War and the war that mostly in Catalonia? Passage:The Basque Country was one of the main sites of battles during the First Carlist War, a civil war between supporters of the Spanish regent Maria Christina, known as liberals, and those of the late king's brother Carlos of Borbon, known as Carlists. The Carlists were particularly focused on capturing Bilbao, a liberal and economic bastion in northern Spain. The Carlist general Tomas de Zumalacarregui tried to take the city during the Siege of Bilbao of 1835, but he was wounded during a battle near Begona and died some time after in the town of Zegama. The next year, the city resisted a second siege during which the liberal general Baldomero Espartero defeated the Carlists in the Battle of Luchana. The city was untouched by the Second Carlist War, which took place mostly in Catalonia, but was again an important scenario during the Third Carlist War; in April 1874 the city suffered a third siege which lasted two months.

Example Output: b

Example Input: Question: What is the current population of the city that Marcus personally delivered a fur coat to a customer in? Passage:As a retailer, Marcus believed strongly in making his store into a place where everything a customer needed could be found and, if necessary, brought to the customer's front door. He was said to have helped one customer discover the shoe size of Queen Elizabeth II so as to give the gift of stockings and a pair of shoes, and he ordered that the store stock such items as a set of Steuben plates with the Mexican national crest, "because sooner or later somebody will be going to call on the President of Mexico and need a proper gift." He personally delivered a fur coat to a St. Louis, Missouri, customer who could not make the trip to Dallas. Another story often recounted is that of a shopper who, in searching for a present for his wife, said that he was not sure what to buy, but that he would know it when he saw it. In response, Marcus inquired about the woman's clothing sizes and asked the customer to wait briefly. Taking an oversized brandy snifter from a display, Marcus gathered cashmere sweaters of various colors, arranged them in imitation of a pousse-cafe, topped with a white angora sweater to simulate whipped cream, and in place of a cherry, garnished the concoction with a 10-karat ruby ring, at a total cost of $25,350, which the customer gladly paid. When one customer decided his Christmas purchases were not sufficiently impressive, Marcus helped to arrange a full duplication of the store's display window, complete with mannequins and lighting, inside the man's home.

Example Output:
b