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.

Q: The blades crashed and the room shook.

A: Plural
****
Q: Kids and teachers swarmed the area like a bunk of flies to a Bar-B-Q.

A: Plural
****
Q: Finally, his comm unit trembles against his thigh.

A:
Singular
****