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For each origin city, find the destination city (or cities) with the longest direct flight. by direct flight, we mean a flight with no intermediate stops. judge the longest flight in time, not distance. show the name of the origin city, destination city, and the flight time between them. do not include duplicates of the same origin/destination city pair. order the result by origin_city name then destination city name.

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For each origin city, find the destination city (or cities) with the longest direct flight. by direc...
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