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 immortals were especially shell shocked.

SOLUTION: Plural

PROBLEM: The man-made chemical polonium leaks from the engines by tiny droplets.

SOLUTION: Singular

PROBLEM: Her lack of intelligence didn't matter one iota because Kristen was beautiful.

SOLUTION:
Singular