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 race is on.

SOLUTION: Singular

PROBLEM: The laces loosened and spread under his fingers.

SOLUTION: Plural

PROBLEM: The visitors whispered and murmured in awe.

SOLUTION:
Plural