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.

For a while, all these factors made her cold and unapproachable to men in gothic society.
Plural

Still, there was a certain subtlety of expression that Earth models lacked'.
Singular

The duke sounded ready to explode.

Singular