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: 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: OPERA 
Clue: This 20th century opera was inspired by Hieronymus Bosch's painting "The Adoration of the Magi"

SOLUTION: amahl and the night visitors

PROBLEM: Category: MEN OF MEDICINE 
Clue: After giving birth in Paris, American Marjorie Karmel wrote "Thank You" him & co-founded an orgianization now named for him

SOLUTION:
fernand lamaze