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: SCIENCE FICTION
Clue: A recent re-issue of this Sir Arthur Conan Doyle novel includes an introduction by Michael Crichton

SOLUTION: the lost world

PROBLEM: Category: AMERICAN NOVELISTS
Clue: "What is moral is what you feel good after and what is immoral is what you feel bad after", he wrote in 1932

SOLUTION: ernest hemingway

PROBLEM: Category: WORLD GEOGRAPHY
Clue: The land closest to zero longitude, zero latitude & zero altitude, Cape Three Points is found on this continent

SOLUTION:
africa