instruction:
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.
question:
Amsterdam Airport Schiphol operating organization is Schiphol Group.
answer:
Amsterdam Airport Schiphol


question:
O.C. performed Story.
answer:
Story


question:
The released date of Polarium was 2005.
answer:

Polarium