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.

Input: Consider Input: In 2000, he placed 7th in the mass start competition.

Output: 2000


Input: Consider Input: On May 10th, 1918, the keel of PE-2 was laid.

Output: PE-2


Input: Consider Input: Cortex assembly for genome and date


Output: Cortex