In this task you are given a sentence. You must judge whether subject of the main clause is singular or plural. Label the instances as "Singular" or "Plural" based on your judgment.

Example Input: Doors littered the floor, shattered glass cracked and splintered beneath their feet.
Example Output: Plural

Example Input: If he spun the wheel, the metal bars would shift inward a few inches, clearing the welded braces on both sides of the door.
Example Output: Plural

Example Input: An adult could have saved him if one was present, but he had no savior.
Example Output:
Singular