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: The valet pulled the car up and my parents helped me into the backseat of their rental car.

SOLUTION: Singular

PROBLEM: The accent was thick and difficult to understand.

SOLUTION: Singular

PROBLEM: His broken promises and lack of trust were what was the breaking point for our relationship.

SOLUTION:
Plural