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 consistency, answers should be in all lower cased letters.

Category: BETTER KNOWN AS.... 
Clue: Singer Helen Folasade Adu
sade

Category: GOING WIRELESS 
Clue: Thanks to firms like Pegaso & Telemex, this country now has more cellular users than fixed line customers
mexico

Category: BELOW THE BELT 
Clue: These men's shoes that share their name with a British university are also known as Balmorals

oxfords