instruction:
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 consistency, answers should be in all lower cased letters.
question:
Category: 19th CENTURY BUSINESSMEN 
Clue: In 1873 he founded the J. Edgar Thomson works near Pittsburgh, naming the steel mill for the Penn. railroad president
answer:
carnegie


question:
Category: OPERA 
Clue: "Esmeralda", an 1840s opera, is based on a work by this "Miserable" author
answer:
victor hugo


question:
Category: THE REAL LAND OF OZ 
Clue: This party led Australia from 1983 to 1996, while a party of the same name was Britain's opposition
answer:

labor