[Q]: Question: "What runs a climbing elevator?"  Context: "A climbing elevator is a self-ascending elevator with its own propulsion. The propulsion can be done by an electric or a combustion engine. Climbing elevators are used in guyed masts or towers, in order to make easy access to parts of these constructions, such as flight safety lamps for maintenance. An example would be the Moonlight towers in Austin, Texas, where the elevator holds only one person and equipment for maintenance. The Glasgow Tower — an observation tower in Glasgow, Scotland — also makes use of two climbing elevators."  Answer:
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[A]: an electric or a combustion engine


[Q]: Question: "What was American Idol ranked number one overall in?"  Context: "Seasonal rankings (based on average total viewers per episode) of American Idol. It holds the distinction of having the longest winning streak in the Nielsen annual television ratings; it became the highest-rated of all television programs in the United States overall for an unprecedented seven consecutive years, or eight consecutive (and total) years when either its performance or result show was ranked number one overall."  Answer:
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[A]: performance or result show


[Q]: Question: "What kind of patron went to the Fitzroy?"  Context: "The Fitzroy Tavern is a pub situated at 16 Charlotte Street in the Fitzrovia district, to which it gives its name. It became famous (or according to others, infamous) during a period spanning the 1920s to the mid-1950s as a meeting place for many of London's artists, intellectuals and bohemians such as Dylan Thomas, Augustus John, and George Orwell. Several establishments in Soho, London, have associations with well-known, post-war literary and artistic figures, including the Pillars of Hercules, The Colony Room and the Coach and Horses. The Canonbury Tavern, Canonbury, was the prototype for Orwell's ideal English pub, The Moon Under Water."  Answer:
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[A]: artists, intellectuals and bohemians


[Q]: Question: "What energy source do the Alps do for parts of Europe?"  Context: "The Alps provide lowland Europe with drinking water, irrigation, and hydroelectric power. Although the area is only about 11 percent of the surface area of Europe, the Alps provide up to 90 percent of water to lowland Europe, particularly to arid areas and during the summer months. Cities such as Milan depend on 80 percent of water from Alpine runoff. Water from the rivers is used in over 500 hydroelectricity power plants, generating as much as 2900 kilowatts of electricity."  Answer:
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[A]:
hydroelectric power