Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Ex Input:
What is the name of the US electric car manufacturer, founded in 2003, whose cars include the Model S and the Model X?

Ex Output:
tesla model s


Ex Input:
Who was re-elected Prime Minister of Canada in May 2011?

Ex Output:
prime minister of canada


Ex Input:
In which 1973 thriller film directed by Nicolas Roeg was there an explicit sex scene between Donald Sutherland and Julie Christie?

Ex Output:

donald sutherland