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

Q: Which river begins in the Rocky Mountains in south-west Colorado, crosses New Mexico and forms the border between Mexico and the USA before reaching the Gulf of Mexico?

A: new mexico
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Q: Which former 'Eastenders' actor and Labour activist was elected to be one of the West Midlands representatives in the European parliamentary elections of 1999?

A: eastenders
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Q: Name the character played by Anthony Perkins in Hitchcock's 1960 movie, Psycho.?

A:
anthony perkins
****