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 blades crashed and the room shook.

SOLUTION: Plural

PROBLEM: The fellow on the left, " I said.

SOLUTION: Singular

PROBLEM: a choir of voices asked in the room.

SOLUTION:
Singular