TASK DEFINITION: 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.
PROBLEM: Doors littered the floor, shattered glass cracked and splintered beneath their feet.

SOLUTION: Plural

PROBLEM: We are the tenants, not the landlords, a temple priest once said at a weekly gathering.

SOLUTION: Singular

PROBLEM: Things had clearly improved, that much was certain.

SOLUTION:
Plural