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: 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. Zenobe 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.

Ex Output:
b

Ex Input:
Question: Which company manufactured the rifle that the Bundeswehr replaced in 1997? Passage:The Heckler & Koch G36 is a 5.5645mm assault rifle, designed in the early 1990s by Heckler & Koch in Germany as a replacement for the heavier 7.62mm G3 battle rifle. It was accepted into service with the Bundeswehr in 1997, replacing the G3. The G36 is gas-operated and feeds from a 30-round detachable box magazine or 100-round C-Mag drum magazine. The G36 was made with the extensive use of lightweight, corrosion-resistant synthetic materials in its design; the receiver housing, stock, trigger group (including the fire control selector and firing mechanism parts), magazine well, handguard and carry handle are all made of a carbon fiber-reinforced polyamide. The receiver has an integrated steel barrel trunnion (with locking recesses) and a nylon 66 steel reinforced receiver. The standard German Army versions of the G36 are equipped with unique a ZF 34 dual optical sight that combines a 3 magnified telescopic sight and an unmagnified reflex sight mounted on top of the telescopic sight. Widely distributed, it has been adopted by over 40 countries and prompted other nations to develop similar composite designs, such as the FX-05 Xiuhcoatl.

Ex Output:
b

Ex Input:
Question: How much fuel can the autogyro that Surplus used to circumnavigate the globe hold? Passage:Norman Surplus (born 1963) is a Northern Irish pilot, who became the first person to circumnavigate the globe in an autogyro, nicknamed "Roxy". His trip began in 2010 and ended on 28 June 2019. In 2010, during the first leg of his trip, Surplus flew over Europe, the Middle East, Asia, and North America. In June 2015, Surplus commenced the second leg of his journey by flying through the United States and crossing the Atlantic Ocean to eventually land in Larne, Northern Ireland in August 2015, becoming the first person to cross the Atlantic in an autogyro. In 2019, he completed the last leg of his journey when he finally obtained permission from the Russian Federation to fly through its airspace. He left Ireland on Easter Monday in 2019, and flew through Russia to eventually reach the United States and land at the Evergreen Aviation and Space Museum in Oregon completing his circumnavigation of the globe in an autogyro. Surplus's AutoGyro MT-03 is currently displayed at the EAA Aviation Museum and will remain there for the duration of AirVenture 2020. Surplus took nine years to complete his journey around the world, and flew over 32 countries, over a total distance of . In a 2015 interview with the CBC, while on a stopover at Iqaluit, Canada, Surplus mentioned that the trip should have taken approximately four months but the problems with obtaining permission to fly over Russia, which persisted for three years, derailed his plans.

Ex Output:
a