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: His concentration since Iseo left Compostela fell completely to his training.
Example Output: Singular

Example Input: the two Masters cried in stunned horror.
Example Output: Singular

Example Input: The more popular letters of the alphabet claimed two or even three hooks.
Example Output:
Plural