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 laces loosened and spread under his fingers.
Plural

Then the vigil began.
Singular

The notion of her brother actually concerned about her startled Trinity, and she had to look in her brother's eyes before she could believe it.

Singular