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]: 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]: Their apartments were ten minutes apart and they each regularly dropped by the other's place.
[A]: Plural


[Q]: When the opportunity rises... jump all over it... with both feet. "
[A]:
Plural