TASK DEFINITION: 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.
PROBLEM: The monitor's beeping dove from a constant beep to deep electronic thuds.

SOLUTION: Singular

PROBLEM: The mortal was putting his life at risk to see the girl safely to Port Henry.

SOLUTION: Singular

PROBLEM: Her passion was overwhelming in its intensity.

SOLUTION:
Singular