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: My fingernails scraped against granite.

SOLUTION: Plural

PROBLEM: The blond captain backed up and took Anna's hand, and he pulled her down the corridor to the left.

SOLUTION: Singular

PROBLEM: Hank's nostrils flared as we came to a stop.

SOLUTION:
Plural