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]: Screams erupted, winding around me like ivy leaves reaching for the sun.
[A]: Plural

[Q]: " Dogs can be a nuisance. "
[A]: Plural

[Q]: A staircase ascended to an upper floor, occupying most of the space in the passage.
[A]:
Singular