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.

[Q]: A clump of reeds to her left gave her the idea.
[A]: Singular

[Q]: Moses thought for a moment, as he pushed the remnants of his meal around his plate.
[A]: Plural

[Q]: The upper floors of the main building, above the great hall, housed the classrooms and the library.
[A]:
Plural