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 caller hung up.

A: Singular
****
Q: Ahead of the ship, the relatively calm seas were washing against slate grey rocks that rose seven or eight feet up out of the waters.

A: Plural
****
Q: The guardians cannot come to the other world, and even guides shouldn't. "

A:
Plural
****