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.

Luciano Spalletti was at the club Virtus Entella.
Luciano Spalletti

The American Journal of Mathematics is also known by the abbreviated title of Am. J. Math.
American Journal of Mathematics

The leader of Romania is known as the Prime Minister.

Romania