instruction:
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.
question:
Doors littered the floor, shattered glass cracked and splintered beneath their feet.
answer:
Plural


question:
Despair might be the tune he sang to himself about what he did, but a deep polished vanity lay beneath it.
answer:
Singular


question:
The mass of insects undulated, a living carpet that began to reluctantly weave itself into a dark shadow creeping along the ground.
answer:

Singular