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: The runway at Angola International Airport is called "05L/23R".
Example Output: Angola International Airport

Example Input: Dax Shepard played 20 questions in the 10-2012 issue.
Example Output: 10-2012

Example Input: Battsengel mangolian population 3818
Example Output:
Battsengel