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: " If you think that's unstoppable, you ain't seen nothin' yet, " said the clown.
Example Output: Singular

Example Input: " This fellow went on.
Example Output: Singular

Example Input: The altar began to tremble.
Example Output:
Singular