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: A clump of reeds to her left gave her the idea.

Answer: Singular


Question: The tiles merged into the lawn.

Answer: Plural


Question: The doorknob jiggled as her dad unlocked it.

Answer:
Singular