This task is about identifying the subject of a given sentence. The subject of a sentence is the person, place, or thing that is performing the action of the sentence. The subject represents what or whom the sentence is about. Each sentence in this task is guaranteed to contain a single subject. The input is a sentence and the output is the identified subject of that sentence.

[EX Q]: One United States ethnic group is White Americans.
[EX A]: United States

[EX Q]: Athens is located in the country of Greece.
[EX A]: Athens

[EX Q]: Susana Mendoza is the leader of Chicago.
[EX A]:
Chicago