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.

Ex Input:
The Flash Size of the AT90S4414 Chip is 4k.

Ex Output:
AT90S4414


Ex Input:
Episode 3 was seen by 1081000.

Ex Output:
3


Ex Input:
Elizabeth II is the leader of the United Kingdom.

Ex Output:

United Kingdom