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.

[EX Q]: Category: PASTIMES 
Clue: The FCC assigns call signs, like N8DNR, to use in this hobby
[EX A]: ham radio

[EX Q]: Category: START SAVING NOW 
Clue: This $1.5 billion dollar telescope, seen here, has opened our Earth-bound eyes to undreamed-of splendors
[EX A]: the hubble space telescope

[EX Q]: Category: TRANSPORTATION 
Clue: Developed in the 1830s, this cab named for its inventor put the driver on an elevated seat in the rear
[EX A]:
a hansom