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

Example Input: The Bob Dylan songs 'Desolation Row', 'Tombstone Blues' and 'Like A Rolling Stone' featured on which album?
Example Output: tombstone blues

Example Input: Which British Prime Minister signed the 'Entente Cordiale' in 1904?
Example Output: prime minister of the united kingdom

Example Input: On which lake was Sir Donald Campbell killed in 1967 while attempting to break the World water-speed record?
Example Output:
donald campbell