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.
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Question: Category: BACK TO BUSINESS 
Clue: No-contract & pay as you go plans are selling points of this cell phone company started by Sir Richard Branson

Answer: virgin mobile


Question: Category: LIBRARIES 
Clue: Samuel Pepys' famous diary is housed at the Pepysian Library at Magdalene College at this university

Answer: cambridge


Question: Category: JOCKEY SHORTS 
Clue: This ex-jockey is known for writing horse racing mysteries like "High Stakes"

Answer:
dick francis