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: A Wizard of Mars is available in print form.

SOLUTION: A Wizard of Mars

PROBLEM: The location of the BBC is the Broadcasting House in London.

SOLUTION: BBC

PROBLEM: Appleton International Airport elevation above the sea level in metres is 280.

SOLUTION:
Appleton International Airport