Definition: 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'.

Positive Example 1 -
Input: What country has borders with Libya, Sudan and Israel?
Output: location

Positive Example 2 -
Input: What child actress delighted audiences in Curly Top and Heidi?
Output: film

Negative Example 1 -
Input: Actor Jack Nicholson won his first Best Actor Oscar for which film?
Output: film

Negative Example 2 -
Input: Which famous novel was written in 1877 by Anna Sewell as a protest against cruelty to horses?
Output: anna sewell

Now complete the following example -
Input: Prints of which 1927 silent German expressionist science fiction film directed by Fritz Lang were discovered in Australia, the Museo del Cine in Buenos Aires, Argentina and the National Film Archive of New Zealand, to become the basis for a restoration project for a DVD/BD?
Output: 

film