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:
The immortals were especially shell shocked.
answer:
Plural

question:
" If you think that's unstoppable, you ain't seen nothin' yet, " said the clown.
answer:
Singular

question:
This harmless little exercise could have cost us our butts, let's tighten up our action. "
answer:
Singular