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

[EX Q]: And Another Thing... by Eoin Colfer, published in 2009, eight years after the death of the author of the first five, is described as the sixth in which trilogy of books?
[EX A]: and another thing...

[EX Q]: Which 20th century British prime minister had the longest surname ?
[EX A]: prime minister of the united kingdom

[EX Q]: In which war did the battles of Crecy and Poitiers take place?
[EX A]:
battle of crecy