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 tests show the radio is working fine, but I'm not getting reception on any channel.

SOLUTION: Plural

PROBLEM: The five figures wore heavy, black cloaks that dragged along the ground.

SOLUTION: Plural

PROBLEM: The third dwarf wrinkled his brow and nodded as he worked things over in his intoxicated brain.

SOLUTION:
Singular