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

SOLUTION: Singular

PROBLEM: Things do not work here the way they work back at your home. "

SOLUTION: Plural

PROBLEM: A low growl woke me in the middle of the night.

SOLUTION:
Singular