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: There was an immense scowl on her face.

Answer: Singular


Question: The leader of the band of urchins offered a pert salute, then moving forward he eyed Gideon in a knowing manner.

Answer: Singular


Question: The impeccable rows of homes marched onward, little soldiers on the front lines of suburbia, hoping valiantly they would never meet a tragic end.

Answer:
Plural