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 front yard was several acres long.

SOLUTION: Singular

PROBLEM: Except this time, the images were not just from his life, but from the lives of countless others.

SOLUTION: Plural

PROBLEM: A velvet robe that had belonged to the fifth Poppy Holland hung on the back of her door.

SOLUTION:
Singular