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.

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

His concentration since Iseo left Compostela fell completely to his training.
Singular

Then your bitch of a sister robbed me of my fun, so I thought to skin you alive.

Singular