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: My tiny reflection in her eyes looked very pale.

SOLUTION: Singular

PROBLEM: His suggested targets were dangerous people that had escaped punishment.

SOLUTION: Plural

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

SOLUTION:
Singular