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: A chorus of Hear, hear met his pronouncement.

SOLUTION: Singular

PROBLEM: His attempts to remain secluded failed with every head turned in his direction.

SOLUTION: Plural

PROBLEM: Those suits allowed him to blend in, to become almost invisible.

SOLUTION:
Plural