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: Those banks generally don't carry as much cash, but they usually don't have as many security guards, either. "

SOLUTION: Plural

PROBLEM: The off-duty homicide investigator put her napkin on the table, not realizing the impact of her words on the latecomers.

SOLUTION: Singular

PROBLEM: Alcoholic beverages were only for special occasions with them so they hung out in the back room of the general store.

SOLUTION:
Plural