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 eyelids are heavy, my fingers and toes sting with cold.
Example Output: Plural

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

Example Input: Occasionally, ventilation registers in the ceiling marked his passage, but aside from that it was just one endless passageway.
Example Output:
Plural