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 Swiss Psalm is the anthem of Switzerland.
Example Output: Switzerland

Example Input: The Viper Room is located in Los Angeles, California.
Example Output: Los Angeles, California

Example Input: 1634: The Ram Rebellion was written by Virginia DeMarce.
Example Output:
1634: The Ram Rebellion