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]: " What's madness is that with a push of a button, they can knock us all out within seconds. "
[A]: Singular


[Q]: The Undead Guardian himself appeared to rock on his heels.
[A]: Singular


[Q]: The famous high French ceilings were so low now that even Mary Ann almost had to stoop under the beams.
[A]:
Plural