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:
The construction of 250 Delaware Avenue began in January 2014.

Ex Output:
250 Delaware Avenue


Ex Input:
The 1400 m was held in Pinjarra.

Ex Output:
Pinjarra


Ex Input:
Eric Flint was influenced by Robert A. Heinlein.

Ex Output:

Eric Flint