Given a trivia question, classify broad topical category from this list: 'theater', 'geology', 'book', 'tv', 'astronomy', 'aviation', 'military', 'government', 'boxing', 'projects', 'metropolitan_transit', 'law', 'venture_capital', 'broadcast', 'biology', 'people', 'influence', 'baseball', 'spaceflight', 'media_common', 'cvg', 'opera', 'olympics', 'chemistry', 'visual_art', 'conferences', 'sports', 'language', 'travel', 'location', 'award', 'dining', 'martial_arts', 'comic_strips', 'computer', 'user', 'tennis', 'music', 'organization', 'food', 'event', 'transportation', 'fictional_universe', 'measurement_unit', 'meteorology', 'distilled_spirits', 'symbols', 'architecture', 'freebase', 'internet', 'fashion', 'boats', 'cricket', 'film', 'medicine', 'finance', 'comic_books', 'celebrities', 'soccer', 'games', 'time', 'geography', 'interests', 'common', 'base', 'business', 'periodicals', 'royalty', 'education', 'type', 'religion', 'automotive', 'exhibitions'.

Example Input: Which hero of several Arthur Conan Doyle stories was first introduced in the novel 'The Lost World' in 1912?
Example Output: book

Example Input: What English folk singer, songwriter, and musician whose primary musical instruments are the violin, the tenor guitar, the banjo and the viola, was brought up in the village of Buckland Monachorum, near Yelverton, Devon, produced 4 solo studio albums (The Punch Bowl, Kitty Jay, Freedom Fields & Poor Mans Heaven) between 2002 and 2008, and in February 2007 won Singer of the Year and Best Album awards at the BBC Radio 2 Folk Awards?
Example Output: music

Example Input: What was the currency of Belgium before the introduction of the Euro?
Example Output:
location