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: THE PREZ SEZ 
Clue: He once said, "I'm just a politician from Missouri and proud of it"
harry s. truman

Category: TO PROTECT 
Clue: This "service" is best known for protecting the president, but also investigates forgery
the secret service

Category: ATLANTA BUSINESS & INDUSTRY 
Clue: This soft drink company once owned "Jeopardy!"

coca-cola