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.

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

A: Plural
****
Q: Their apartments were ten minutes apart and they each regularly dropped by the other's place.

A: Plural
****
Q: A rustling of feathers brought her to her feet.

A:
Singular
****