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

SOLUTION: Singular

PROBLEM: Good roads b -- " " Build a better country, yes, " the old sage finished.

SOLUTION: Plural

PROBLEM: A loud crash sounded from the small boathouse followed by a shout.

SOLUTION:
Singular