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.

Input: Consider Input: Question: What materials are used as fuel in the type of furnace first used in the Weald to produce cast iron? Passage:Sir Francis Pettit Smith of Kent invented the screw propeller. Faversham Oyster Fishery is the oldest company in the world. Maidenhead Railway Bridge is known for its flat arch, built in 1839 with 39-metre spans. The Wealden iron industry in the Weald was the site of the first blast furnace in Britain in 1491, and produced much of Britain's cast iron until the 1770s. Portsmouth Block Mills were the site of the world's first metal machine tools, built for the manufacture of wooden pulleys, invented by Henry Maudslay, and the site of the world's first industrial assembly line in 1803. South Foreland Lighthouse on 8 December 1858 was the world's first lighthouse with electric light, with the first type of industrial electrical generator made by Frederick Hale Holmes, from work he had carried out with Floris Nollet of Belgium, and 36 permanent magnets. By 1880, of the ten lighthouses with electric light, five were in the UK. From the lighthouse in 1899, the first international radio broadcast to France was made. Zénobe Gramme of Belgium made a much better design in 1870 with self-excitation of magnets, and the first modern dynamo. North Foreland Lighthouse was the UK's last-manned lighthouse until 1998.


Output: b


Input: Consider Input: Question: What was Bari's record the year Carbone made his professional debut? Passage:Carbone had a much travelled career, playing for ten different clubs. He began his youth career with Bari, making his professional debut with the club in Serie B during the 1988–89 season, earning promotion to Serie A. During his first season in Serie A, he broke into the starting line-up, making 26 appearances and scoring a goal against Inter at the San Siro stadium. In 1990, he moved to Milan at the request of manager Arrigo Sacchi. During his first season with the club, he made 21 appearances in Serie A, making his club debut on 9 September 1990, in a 1–0 home win over Genoa in Serie A. He also made his UEFA Champions League debut, scoring a goal against Club Bruges, and he started in Milan's European Supercup and Intercontinental Cup victories in 1990.


Output: a


Input: Consider Input: Question: Who won the State of Origin series where McCormack replaced Benny Elias as hooker? Passage:However, when tried at for the first time at hooker in 1992 against Manly at Carlaw Park, McCormack impressed immediately for his workrate and his ability to dart out of the dummy half position. McCormack was selected to represent New South Wales in game I of the 1992 State of Origin series and game II of the 1993 series when he replaced Benny Elias as hooker. Eventually becoming captain of the Knights, he was signed by Newcastle's new cross-town rivals the Hunter Mariners for the 1997 Super League (Australia) season. After that McCormack moved to the Super League to play for English club Wigan Warriors. He was named in 1998's Super League Dream Team. He also played at hooker for Wigan Warriors in their 1998 Super League Grand Final victory over Leeds Rhinos.



Output: b