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: We are the tenants, not the landlords, a temple priest once said at a weekly gathering.

SOLUTION: Singular

PROBLEM: The images from her vision ceased as well, so he could only imagine what was happening to Elise behind him.

SOLUTION: Plural

PROBLEM: " The gems are not only real, but rare and of the finest quality.

SOLUTION:
Plural