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

[EX Q]: Better known as an actor, who directed the film `A Bronx Tale`?
[EX A]: a bronx tale

[EX Q]: What actress, born in Muscat, Oman, began acting on Australian television on Paradise Beach and Home and Away and is known for her roles in Wedding Crashers (2005), Hot Rod (2007), Definitely, Maybe (2008) and Confessions of a Shopaholic (2009)?
[EX A]: definitely, maybe

[EX Q]: Who invented the ballbarrow and the `Airblade' hand-drier amongst many other things?
[EX A]:
ballbarrow