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: All the androids looked the same, except for a small number on a badge worn on their uniform.

SOLUTION: Plural

PROBLEM: When my tender skin has toughened enough to withstand the pressure of sheets, more visitors arrive.

SOLUTION: Plural

PROBLEM: The roller coaster his presence sent my emotions on was overwhelming.

SOLUTION:
Singular