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 front yard was several acres long.

SOLUTION: Singular

PROBLEM: Finally the credits rolled on the screen.

SOLUTION: Plural

PROBLEM: In her, the Herd instinct would also be dead.

SOLUTION:
Singular