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

In which shipping forecast area are the Channel Islands?
channel islands

The Church of the Savior on Spilled Blood, built on the site of the assassination of Tsar Alexander II, is in which Russian city?
church of the savior on blood

Who became president of Afghanistan in December 2004?

president of afghanistan