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 accent was thick and difficult to understand.

SOLUTION: Singular

PROBLEM: Since the Miracle, pilgrims from around the globe have kept a steady flow of traffic into and out of the small but popular prairie oasis.

SOLUTION: Plural

PROBLEM: The hundred-year-old surgery twins moved to the top of my " most creepy people alive " list.

SOLUTION:
Plural