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: the two cousins chimed in unison, under the tree stood a table with three chairs.

SOLUTION: Plural

PROBLEM: Muscles rippled beneath warm gold skin, and his ice-cold eyes were bleak and dark, holding too many secrets.

SOLUTION: Plural

PROBLEM: The passengers are strictly off limits, obviously, and getting involved with a staff member can result in disaster if it blows up.

SOLUTION:
Plural