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.

Had his uncle grown forgetful in his old age ?
Singular

Small crackles of lightning danced across its razor-sharp edges.
Plural

There were big rats everywhere, on the floor, on boxes, clinging to the walls.

Plural