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: Flames burned high in shades of grey and white.

SOLUTION: Plural

PROBLEM: The trick will be to set a trap for Ah Chuy Kak's on own territory where he'd feel safe.

SOLUTION: Singular

PROBLEM: The satellites spread the commands anonymously to their other low orbit friends, and then to ground stations around the world.

SOLUTION:
Plural