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 active ingredient of Eribulin Mesylate (E7389) is a type of Macrolide

SOLUTION: Eribulin Mesylate (E7389)

PROBLEM: Great Britain won 29 bronze medals.

SOLUTION: Great Britain

PROBLEM: Jamie McMurray won november 2 the race.

SOLUTION:
Jamie McMurray