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: His concentration since Iseo left Compostela fell completely to his training.

Answer: Singular


Question: A girl's first adult gown is a special garment -- one that she will feel connected to for the rest of her life.

Answer: Singular


Question: " Poison would have been my next option.

Answer:
Singular