TASK DEFINITION: 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.
PROBLEM: Category: SUDDENLY SUDAN 
Clue: In 1995 this former U.S. president oversaw a ceasefire in Sudan to allow relief workers into war-torn areas

SOLUTION: jimmy carter

PROBLEM: Category: PHOTOGRAPHERS 
Clue: Best known as a writer of children's stories, he was also a fine photographer; Alice Liddell was a subject

SOLUTION: lewis carroll

PROBLEM: Category: "OO" WHO? 
Clue: What he really said in 1925 was that "the chief business of the American people is business"

SOLUTION:
calvin coolidge