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: Which of North America's Great Lakes has the same name as a province of Canada?

Output: canada


Input: Consider Input: Which Czech author wrote The Trial and The Castle?


Output: the trial