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.

[EX Q]: area code 701 is an area code for the u.s. state of north dakota.
[EX A]: area code 701

[EX Q]: county monaghan (in gaelic ) is a county in ireland.
[EX A]: county monaghan

[EX Q]: police action is a term for the use of military forces without declaring war.
[EX A]:
police action