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]: the wrigley building (400-410 north michigan avenue, near north side, chicago, illinois) is a skyscraper in chicago.
[EX A]: wrigley building

[EX Q]: michigan avenue is a major north-south street in chicago.
[EX A]: michigan avenue

[EX Q]: karlstad municipality is a municipality in värmland county in central sweden.
[EX A]:
karlstad municipality