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

Input: Consider Input: What was the first Apollo mission to leave Earth orbit and orbit the moon, in 1968?

Output: apollo


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

Output: pico do arieiro


Input: Consider Input: What is the name of the famous Chicago building that is 110 storeys high?


Output: chicago