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.

Category: EARLY ART 
Clue: This art form of setting stones or glass into mortar was the main decorative art of the Byzantine Empire
mosaic

Category: BEHIND THE SCENES AT THE 2008 OLYMPICS 
Clue: A journalist for ITN was detained & manhandled for covering a "pro-" this region protest held early in the Olympics
tibet

Category: THE EMMYS 
Clue: This enigmatic show is such a find that it won the 2005 Emmy for Outstanding Drama Series

lost