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

Ex Input:
On which holiday island are the peaks of 'Ruivo' and 'Arieiro', and the airport of 'Santa Cruz'?

Ex Output:
pico do arieiro


Ex Input:
What country has an official residence called Blair House, kept for guests of the leader of the country?

Ex Output:
blair


Ex Input:
What is the name of the character of the cultural attache portrayed by Barry Humphries?

Ex Output:

barry humphries