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.

Category: BUSINESS & INDUSTRY 
Clue: Bluelight.com is the internet shopping site of this retail chain
kmart

Category: 19TH CENTURY FICTION 
Clue: The 1853 novel "Clotel, or The President's Daughter" alleges that this man had an affair with a slave
thomas jefferson

Category: TV HISTORY 
Clue: When this animated TV show premiered, it was sponsored by One-A-Day vitamins & Winston cigarettes

the flintstones