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: In June 2009, Canada announced plans to extend which national park from 4,800 square kilometres to 30,000 square kilometres to help protect the habitat of grizzly bear, caribou and other species?
Output: 

location