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

[Q]: Which chemical element is named after the Latin for Copenhagen where it was discovered?
[A]: copenhagen

[Q]: In which shipping forecast area are the Channel Islands?
[A]: channel islands

[Q]: Which photographer has had four wives including Catherine Deneuve and Marie Helvin?
[A]:
marie helvin