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.
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Question: When my tender skin has toughened enough to withstand the pressure of sheets, more visitors arrive.

Answer: Plural


Question: The bullet had passed right through, not cutting any major arteries.

Answer: Singular


Question: The endearment had her heart flipping over in her chest.

Answer:
Singular