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 healers were closely monitoring Branden's condition, and there was one in the reception room of his suite when they arrived.

SOLUTION: Plural

PROBLEM: The décor was exactly what you would expect in a diner.

SOLUTION: Singular

PROBLEM: His personality still sucked.

SOLUTION:
Singular