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: The deep boom of the two shots, which had been batting to and fro among the mountains, died away.

A: Singular
****
Q: The harsh mesh dulled it quickly.

A: Singular
****
Q: " Adam, there are security cameras here. "

A:
Plural
****