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: Nope, this birthday was about something even sweeter.

SOLUTION: Singular

PROBLEM: Americus moved over to the tall chimney.

SOLUTION: Plural

PROBLEM: On the D-Day, the college auditorium was house full.

SOLUTION:
Singular