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: Any mission not sanctioned by official diplomacy could trigger an international incident of the most dire proportions.

Answer: Singular


Question: Piper hadn't heard Klaus' speech so she just sat there watching us talk about things she didn't understand.

Answer: Singular


Question: Dr. Rosen pulled back the cloth covering a series of sharp needles and three vials of liquid.

Answer:
Singular