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

Which late 17th and early 18th century British architect designed Brighton Pavilion, Marble Arch, and the plan for London's Regents Park?
royal pavilion

Whose tale in Chaucer's The Canterbury Tales tells of a knight sent away by his queen to discover what women want above all else?
the canterbury tales

True versatility! Which actress achieved her biggest success in Samson and Delilah and co-invented the first form of spread spectrum, a key to modern wireless communication?

delilah