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.

area code 701 is an area code for the u.s. state of north dakota.
area code 701

police academy: the series, also known as police academy: the animated series, is an popular 1988 american animated television series based on the "police academy" series of films.
police academy: the animated series

iran air is an airline based in iran.

iran air