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: Lena's posture improved as she spoke.
Example Output: Singular

Example Input: For the most part, all the classes I'd held had gone well.
Example Output: Plural

Example Input: Mechanical creatures do not change or grow.
Example Output:
Plural