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: Sean snapped his head up to look at the Fae, but he was gone, the clearing empty.

SOLUTION: Singular

PROBLEM: My inquiries took me to Los Angeles where I ran into a stonewall put up by Lorraine's psychiatrist.

SOLUTION: Plural

PROBLEM: The sobs were quiet and I placed a consoling hand on her shoulder.

SOLUTION:
Plural