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

[Q]: Which jockey won the 1981 UK Grand National on Aldaniti?
[A]: aldaniti


[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?
[A]: and another thing...


[Q]: Which painter, born in Antwerp, was invited by Charles I to be the court painter, and was knighted in 1632?
[A]:
charles i of england