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: Appleton International Airport can be found in Greenville, Wisconsin.
Example Output: Appleton International Airport

Example Input: Bakewell pudding can be served warm (freshly baked) or cold.
Example Output: Bakewell pudding

Example Input: The station located in Albuquerque has been owned since 2003.
Example Output:
Albuquerque