TASK DEFINITION: In this task you are given a sentence. You must judge whether the object of the main clause is singular(like: apple) or plural(like: apartments). Label the instances as "Singular" or "Plural" based on your judgment.
PROBLEM: Suddenly he heard the echo of footfalls against his marble floors.

SOLUTION: Singular

PROBLEM: He didn't rub his temple along hers.

SOLUTION: Singular

PROBLEM: said the dispatcher over her microphone.

SOLUTION:
Singular