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 higher functions offer splendid regulation of my aqueous economy.
answer:
Plural


question:
Washoe's progress with ASL was rapid ; by 1971, she had a vocabulary of 160 signs, which she used in conversation.
answer:
Singular


question:
An exercise rider who works for another horse owner calls out, " Women don't belong on the racetrack !
answer:

Singular