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 inspector looked at them for a moment in surprise before directing his question to Ashley.

SOLUTION: Singular

PROBLEM: Ahead he could see two Agents, one on either side of the doors.

SOLUTION: Plural

PROBLEM: As soon as the charges were dismissed, the courtroom erupted into applause.

SOLUTION:
Singular