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: " When is your employer due ? "

SOLUTION: Singular

PROBLEM: He hoped she'd stay, hoped they could explore the possibilities.

SOLUTION: Plural

PROBLEM: A pencil was sticking out of its ribcage.

SOLUTION:
Singular