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.

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.
Plural

The décor was exactly what you would expect in a diner.
Singular

The hound at my side bumped my hand for a pat, as if to remind me that it was real.

Singular