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

[Q]: Which British composer wrote the music used as the theme for Desert Island Discs He also wrote the Dambusters march and the Knightsbridge march.?
[A]: the dam busters

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

[Q]: With 34.8 percent salinity, Lake Assal is considered the most saline body of water outside Antarctica. In which tiny nation in the Horn of Africa is it located?
[A]:
africa