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

SOLUTION: Plural

PROBLEM: Mrs. Dawson's heart leapt and Helen let go of her hands to circle protective arms around her.

SOLUTION: Singular

PROBLEM: Marius coughed loudly and appeared around the side of the car.

SOLUTION:
Plural