In this task you are given a sentence. You must judge whether the object of the main clause is singular(like: apple) or plural(like: apartments). Label the instances as "Singular" or "Plural" based on your judgment.
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Question: When we took out a section of the wall, it revealed a spiral staircase leading down to a cellar or dungeon. "

Answer: Singular


Question: Scarlett finally lowered her rifle and relaxed, feeling as if the tiger had just been caged.

Answer: Singular


Question: Now do me a favor and call 911. "

Answer:
Singular