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:
The Adolfo Suárez Madrid–Barajas Airport is operated by ENAIRE.
answer:
Adolfo Suárez Madrid–Barajas Airport


question:
Accademia di Architettura di Mendrisio is located in the city of Mendrisio.
answer:
Accademia di Architettura di Mendrisio


question:
Baku is the capital of Azerbaijan.
answer:

Azerbaijan