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]: lyme regis is a coastal town in west dorset, england, 25 miles west of dorchester and 25 mi east of exeter.
[EX A]: lyme regis

[EX Q]: captain tractor is a canadian folk rock band, based in edmonton, alberta.
[EX A]:
captain tractor