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]: the vickers machine gun (also known as the vickers gun) was a machine gun that was used by the british army from 1912 to 1968.
[EX A]: vickers machine gun

[EX Q]: labroye is a commune.
[EX A]:
labroye