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.

Q: " Ponzi schemes are like investment deals.

A: Plural
****
Q: The man-made chemical polonium leaks from the engines by tiny droplets.

A: Singular
****
Q: A werewolf and Mr. Evil were in the center, excited about whatever they were talking about.

A:
Singular
****