Problem: In 1982 and 1987, Harrison and Harrison enlarged the organ under the direction of the then abbey organist Simon Preston to include an additional Lower Choir Organ and a Bombarde Organ: the current instrument now has five manuals and 109 speaking stops. In 2006, the console of the organ was refurbished by Harrison and Harrison, and space was prepared for two additional 16 ft stops on the Lower Choir Organ and the Bombarde Organ. One part of the instrument, the Celestial Organ, is currently not connected or playable.
What part of the organ is connected or playable?
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Answer: unanswerable


Problem: Another potential weapon system for anti-aircraft use is the laser. Although air planners have imagined lasers in combat since the late 1960s, only the most modern laser systems are currently reaching what could be considered "experimental usefulness". In particular the Tactical High Energy Laser can be used in the anti-aircraft and anti-missile role. If current developments continue, some[who?] believe it is reasonable to suggest that lasers will play a major role in air defence starting in the next ten years.
When did personnel first start thinking about using lasers in combat?
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Answer: the late 1960s


Problem: Brasília is known as a departing point for the practice of unpowered air sports, sports that may be practiced with hang gliding or paragliding wings. Practitioners of such sports reveal that, because of the city's dry weather, the city offers strong thermal winds and great "cloud-streets", which is also the name for a manoeuvre quite appreciated by practitioners. In 2003, Brasília hosted the 14th Hang Gliding World Championship, one of the categories of free flying. In August 2005, the city hosted the 2nd stage of the Brazilian Hang Gliding Championship.
What type of sports are popular in Brasilia?
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Answer:
unpowered air sports