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 monitor's beeping dove from a constant beep to deep electronic thuds.
Singular

An old-school fuel gauge on the handlebars informed him that he had half a tank of petrol.
Singular

Its tail did not try to pull him up.

Singular