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: POETIC LINES 
Clue: In a famous poem, this character asks, "If I can rid your town of rats will you give me a thousand guilders?"

SOLUTION: the pied piper

PROBLEM: Category: THE ROMAN EMPIRE 
Clue: The noble class in Roma, its name may be from the Latin for father

SOLUTION: patrician

PROBLEM: Category: EXPRESS YOURSELF 
Clue: Frequently late, this sex symbol quipped in 1962, "I've been on a calendar, but never on time"

SOLUTION:
marilyn monroe