instruction:
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.
question:
My publisher almost went nuts, because he wanted to promote it.
answer:
Singular


question:
Still, guilt followed as thoughts of Eirik crossed my mind.
answer:
Singular


question:
Inside the box were about twenty black and white business cards, each with a small red wax seal of the Bitcoin emblem.
answer:

Plural