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: " Where are the wipers ? "

SOLUTION: Plural

PROBLEM: The consultant merely raised an eyebrow.

SOLUTION: Singular

PROBLEM: The teachers press themselves against the hallway walls as the onslaught becomes imminent.

SOLUTION:
Plural