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: CLASSICAL MUSIC 
Clue: Mendelssohn's "Songs without Words" were once the most popular pieces for this instrument

SOLUTION: piano

PROBLEM: Category: LITERATURE 
Clue: Lloyd Brown, once an inmate of this city's Alleghany County jail, based his novel "Iron City" on life there

SOLUTION: pittsburgh

PROBLEM: Category: OLD HISTORY 
Clue: In this work Virgil wrote that "a woman is always a fickle, unstable thing"

SOLUTION:
the aeneid