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

[Q]: What is the name of the main thoroughfare in Barcelona, which runs from the Placa de Catalunya to the sea?
[A]: barcelona


[Q]: Which popular animated characters, first seen in 1996 include many different characters including ones called Ash Ketchum, Tracy Sketchit and Gar Oak?
[A]: tracy


[Q]: Which politcal party did American President Bill Clinton represent?
[A]:
bill clinton