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]: Lena's posture improved as she spoke.
[A]: Singular


[Q]: " Snare drums, report to the band room before school tomorrow.
[A]: Plural


[Q]: A squad of soldiers had formed up at the tower's front.
[A]:
Singular