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 production format for the series with the local title Fort Boyard: Ultimate Challenge was duel.

Ex Output:
Fort Boyard: Ultimate Challenge


Ex Input:
The Pan American Games winner is Adriana Pereira and is rank 8.

Ex Output:
Adriana Pereira


Ex Input:
A Fortress of Grey Ice is published by Tor Books.

Ex Output:

A Fortress of Grey Ice