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: Two pairs of filthy, crazed eyes faced me.

A: Plural
****
Q: The shadowy grotto had disappeared.

A: Singular
****
Q: The control panel explodes in a waterfall of sparks.

A:
Singular
****