Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Example input: fear of needles (medically known as belomophobia) is a term used to describe a large fear (phobia) of medical procedures involving needles.
Example output: fear of needles
Example explanation: in this statement, we are talking about the fear of needles hence the output of the statement is fear of needles
Q: hip hope is a type of culture/art style that started in the 1970s.
A:
hip hop