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: Then he placed 3 dollars on the counter.

SOLUTION: Plural

PROBLEM: Only a small percentage of stars had developed planetary systems, and of these only a small percentage were even capable of supporting life.

SOLUTION: Plural

PROBLEM: Or an added torment, depending on how he looked at it.

SOLUTION:
Plural