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: Boulder Dam belongs to the historical genre.
Example Output: Boulder Dam

Example Input: Hergé was the creator of the character Bianca Castafiore.
Example Output: Bianca Castafiore

Example Input: "tori tortures teacher was watched by 3.8 million US viewers.
Example Output:
tori tortures teacher