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]: Abilene is the largest city, in Taylor County, Texas.
[EX A]: Taylor County, Texas

[EX Q]: The leader of Birmingham is the Conservative Party (UK).
[EX A]: Birmingham

[EX Q]: "report 4407: heart no choice for the donor" was filmed on july / aug. 1968.
[EX A]:
report 4407: heart no choice for the donor