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.

Ex Input:
Comet 13P/Olbers's orbital period (years) is 69.52.

Ex Output:
13P/Olbers


Ex Input:
The dominant religion in 2002 of the Mala Remeta settlement was Orthodox Christianity.

Ex Output:
Mala Remeta


Ex Input:
London is the capital of England.

Ex Output:

England