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 planes were overhead.
Plural

A girl's first adult gown is a special garment -- one that she will feel connected to for the rest of her life.
Singular

In the first period, the principal said over the intercom that all students must go outside and pick up that mess.

Singular