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: Had his uncle grown forgetful in his old age ?

SOLUTION: Singular

PROBLEM: The squad of Canadian rangers continues to hack its way through the thick brush.

SOLUTION: Singular

PROBLEM: Marius drove to the top of a small dune nearby and swung the truck around to face the building.

SOLUTION:
Plural