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: These creatures are often crazed and power-hungry.

SOLUTION: Plural

PROBLEM: " Those aliens attacked us, and earth was destroyed because of what they did.

SOLUTION: Plural

PROBLEM: Their camouflage uniforms were so noticeably mortal, but the armbands with Ares' symbol were anything but mortal.

SOLUTION:
Plural