Given the task definition, example input & output, solve the new input case.
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.
Example: Category: WHO'S BUYING? 
Clue: YouTube, in 2006
Output: google
Google acquired, i.e. bought, YouTube in 2006 for $1.65 billion.

New input case for you: Category: BEFORE & AFTER 
Clue: "Youthful" 1930s gangster who became a world leader in 1994
Output:
"baby face" nelson mandela