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:
" When is your employer due ? "
answer:
Singular


question:
The rows of houses like headstones in a cemetery.
answer:
Plural


question:
Even their thousands of years of development were no match for the billions of years of human evolution.
answer:

Plural