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 marine layer was far off the coast, giving the sun the opportunity to shine and the temperature to reach the high seventies.

SOLUTION: Singular

PROBLEM: " Where did all this wisdom finally come from ? "

SOLUTION: Singular

PROBLEM: The creatures of the night could now come out to start their lives anew, as they had for millennia.

SOLUTION:
Plural