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: Their footsteps rang out on the concrete floor.

Answer: Plural


Question: Like the trickling of a river, her race began to manifest and walk toward her.

Answer: Singular


Question: 9 Wyoming HE continued on to Cheyenne.

Answer:
Singular