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.

Example Input: In 1994, the unemployment rate was 2.9 percent.
Example Output: 1994

Example Input: The network Metfone is run by Viettel (Cambodia) Pte., Ltd. company
Example Output: Metfone

Example Input: Steve O'Rourke was a driver for entrant EMKA Productions.
Example Output:
EMKA Productions