In this task you are given a sentence. You must judge whether the object of the main clause is singular(like: apple) or plural(like: apartments). Label the instances as "Singular" or "Plural" based on your judgment.

She drove her thumbs hard into the pressure points just above his groin.
Plural

" Digital audio recording on three separate hard discs, plus two analog tapes as backup.
Singular

" Did I just save the Queen of England's life ? "

Singular