Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Established in 1919, which is the world's oldest surviving airline?

Answer: airline


Question: Olympic gold medallists Vilhelm Carlberg, Gunde Svan, Agneta Andersson, Sixten Jernberg, Tomas Gustafson, Thomas Wassberg, Ingemar Stenmark, Gert Fredriksson, Henri Saint Cyr, Alfred Swahn, Eric Lemming and Oscar Swahn represented which country?

Answer: ingemar stenmark


Question: Who designed the Albert Memorial in London?

Answer:
albert memorial