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: AZ Alkmaar full name is "Alkmaar Zaanstreek".

SOLUTION: AZ Alkmaar

PROBLEM: The title "training video" originally air in july19,2009.

SOLUTION: training video

PROBLEM: Michigan International Speedway is located in Brooklyn, Michigan.

SOLUTION:
Michigan International Speedway