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 harsh mesh dulled it quickly.

SOLUTION: Singular

PROBLEM: And, " No, that cucumber isn't quite ready. "

SOLUTION: Singular

PROBLEM: A stab of envy hit my stomach.

SOLUTION:
Singular