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: If I worked fast enough, adrenaline put up a wall between me and my throbbing headache.

SOLUTION: Singular

PROBLEM: The museum's full of carvings just like it.

SOLUTION: Singular

PROBLEM: " Ponzi schemes are like investment deals.

SOLUTION:
Plural