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

[EX Q]: myspace is a social networking website owned by news corp.
[EX A]: myspace

[EX Q]: greeeen or the green is a japanese j-pop group.
[EX A]:
greeeen