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: ROYALTY 
Clue: The last king of the Hellenes, he was the second to bear this name

SOLUTION: king constantine ii

PROBLEM: Category: FAMILIAR PHRASES 
Clue: The phrase "Flower Power" was coined by this poet in the 1960s

SOLUTION: allen ginsberg

PROBLEM: Category: WORLD LEADERS 
Clue: Early in the 20th century, he took one of many pseudonyms, Nguyen Ai Quoc, or "Nguyen the Patriot"

SOLUTION:
ho chi minh