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: MILITARY HISTORY 
Clue: Lasting about a month, it's the battle for which the most marines earned the Medal of Honor

SOLUTION: iwo jima

PROBLEM: Category: FAMOUS PHRASES 
Clue: Phrase associated with very dissimilar events of April 19, 1775 & October 3, 1951

SOLUTION: the \"shot heard \'round the world\"

PROBLEM: Category: 18th CENTURY SCOTSMEN 
Clue: A relative of this inventor described him as a boy staring at the tea kettle for an hour watching it boil

SOLUTION:
james watt