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: My teacher shifted uncomfortably.
Example Output: Singular

Example Input: An old-school fuel gauge on the handlebars informed him that he had half a tank of petrol.
Example Output: Singular

Example Input: " A Vampire with a conscience, " Rafe had murmured.
Example Output:
Singular