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.

Your skills are impeccable, but this program involves strict discipline.
Plural

Others worried it might be a move to cancel Ares 4 and 5.
Plural

Swiftly the elf loaded his bow, stepped back and fired, before instinctively grabbing a second arrow from the quiver.
Singular