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:
I couldn't see Russ anymore, couldn't even hear his screams over the grinding of the massive machine.
answer:
Singular

question:
Suddenly, the Tom Cat veered in another direction.
answer:
Singular

question:
In a heartbeat, his best mate surged to his feet and managed to lay one attacker low with a belt to the chin.
answer:
Singular