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: " No worries, I will see to that, eat up, nothing to be embarrassed about. "

SOLUTION: Plural

PROBLEM: A rustling sounded from the lounger beside her as Hillary stood.

SOLUTION: Singular

PROBLEM: This staircase, however, leads somewhere.

SOLUTION:
Singular