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: Serie D champions include S S Robur Siena.
Example Output: Serie D

Example Input: The Irish name for County Galway is Carna.
Example Output: County Galway

Example Input: Frank de Boer is in the Ajax Youth Academy.
Example Output:
Frank de Boer