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.

Example input: Category: HOMOPHONIC PAIRS 
Clue: It's a notation on a percussion store to clash
Example output: cymbal symbol
Example explanation: "Cymbal" and "symbol" both have the same pronunciations but different meanings, hence they are homophonic pairs. A symbol is the notation and a cymbal is a percussion instrument that clashes and rings.
Q: Category: THE CENSUS 
Clue: The 1930 U.S. Census was the first to ask if residents owned one of these & 12 million were counted
A:
a radio