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.

Example Input: The challenge in his voice startled her.
Example Output: Singular

Example Input: The van pulled up next to the plane.
Example Output: Singular

Example Input: Whilst it still has users on Earth, there are only a few other users in other systems.
Example Output:
Plural