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:
Shouts and prodding spears made it very clear that the prisoners' break was over.
answer:
Plural


question:
A twig snaps behind me.
answer:
Singular


question:
A whistle sounds, and he turns his attention back to the field.
answer:

Singular