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: QUOTATIONS ABOUT LAWYERS 
Clue: Playwright who penned the famous line, "The first thing we do, let's kill all the lawyers"

SOLUTION: william shakespeare

PROBLEM: Category: SPORTS BOOKS 
Clue: In 1998 the author of this controversial 1970 book was finally invited to play in a Yankees old-timers' game

SOLUTION: \"ball four\"

PROBLEM: Category: ADVERTISING ICONS 
Clue: On Advertising Age's list of the Top 10 Ad Icons of the 20th c., they're the 2 alliterative entries that end in "Man"

SOLUTION:
the michelin man & the marlboro man