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: 2-LETTER WORDS 
Clue: It's used to attract attention to something sighted on a ship, like land or a sail

SOLUTION: ho

PROBLEM: Category: COLLEGES 
Clue: Home of over 52,000 Buckeyes

SOLUTION: ohio state university

PROBLEM: Category: WE MEAN BISMUTH 
Clue: The melting point for Bismuth is 520.7 degrees F.; it's 2,847 degrees F. for this point

SOLUTION:
the boiling point [or vaporization]