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

What did Edwin Land invent because of his daughters' wish for instant and 'snappy' results?
edwin h. land

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?
new mexico

Which of these acts had a 1958 hit with Dizzy Miss Lizzy?
dizzy, miss lizzy