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.

Those deaths marked the final dark act to seal this tomb.
Plural

Soldiers with automatic guns waved them through and they drove past a long line of new arrivals waiting to register.
Plural

Jogging away down the path leading from the back of the house, the canyon opened.

Singular