TASK DEFINITION: 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.
PROBLEM: The episode "bringing back the doctor is 1".

SOLUTION: 1

PROBLEM: Michele Marcolini was born in Italy.

SOLUTION: Michele Marcolini

PROBLEM: The Polish Academy of Sciences serves Poland.

SOLUTION:
Polish Academy of Sciences