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.

Ex Input:
A mass of recruits had already gravitated to the Whites.

Ex Output:
Singular

Ex Input:
A clump of cobwebs sprouted from the rotten scalp, drifting slowly in the frozen wind.

Ex Output:
Singular

Ex Input:
But instead of consenting adults, his chosen targets had been young innocents, which made him worse than slime.

Ex Output:
Plural