You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Q: Category: TRAINS 
Clue: As of 2006, you can take a 48-hr. ride between these 2 cities, with a stretch on the world's highest railroad

A: beijing & lhasa
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Q: Category: BRITISH ENTREPRENEURS 
Clue: In 1839 Queen Victoria awarded him the first ever license to deliver mail across the Atlantic

A: cunard
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Q: Category: ROCK ICONS 
Clue: While he's had 12 top 10 hits on Billboard, including 7 from a 1984 album, he's never had a No. 1 single

A:
bruce springsteen
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