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.

Sadness tinged her smile this time.
Plural

A swift rap on the rump with a rolled-up newspaper works for me. "
Singular

Having ducked to the side, the ease with which the ninja is able to evade his attacks makes the battle seem extraordinarily one-sided.

Singular