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: " This fellow went on.

Answer: Singular


Question: I can't float it up now, the turbulence up there must be terrific !'

Answer: Singular


Question: The possibilities are endless. "

Answer:
Plural