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

Which striped or checked cotton cloth takes its name from the Malay word for striped?
cotton

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

What city's Dharavi slum has a population of about 700,000 in less than one square mile?

dharavi