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 ambassador was an ally and friend, who owed his post in Washington, D.C. to the Owl's influence and discreet lobbying.
Example Output: Singular

Example Input: " Ah, learning a foreign language can be so very difficult.
Example Output: Singular

Example Input: My higher functions offer splendid regulation of my aqueous economy.
Example Output:
Plural