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.

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
carnegie

Category: EUROPEAN CAPITALS
Clue: This capital lies on the Attica Plain surrounded by mountains including Parnes & Hymettus
athens

Category: CITY TV
Clue: Hammer -- Jan, not M.C. -- hit No. 1 with the theme to this cop series
miami vice