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]: A mass of recruits had already gravitated to the Whites.
[A]: Singular


[Q]: Things have changed now.
[A]:
Plural