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: Their shared orgasm left them spent and still connected, hugging each other while their breathing slowly returned to normal.

SOLUTION: Singular

PROBLEM: From where do such figures arise ?

SOLUTION: Plural

PROBLEM: Anne's pencil danced across the paper, effortlessly trailing an intricate tapestry of shapes and numbers behind.

SOLUTION:
Singular