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.

If he spun the wheel, the metal bars would shift inward a few inches, clearing the welded braces on both sides of the door.
Plural

Names, characters, businesses, places, events and incidents are either the products of the author's imagination or used in a fictitious manner.
Plural

Each limb was curled and twisted upon itself, giving the weirdest impression of motion.
Singular