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 calluses were back, courtesy of chopping wood, but his fingertips were still smooth.
answer:
Plural


question:
There was no quad, never had been a Henning's Café, and certainly no door on the left.
answer:
Singular


question:
There are idiots who jump in this thing all the time.
answer:

Plural