TASK DEFINITION: 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.
PROBLEM: The lieutenant immediately begins barking out commands to the officers in the room.

SOLUTION: Singular

PROBLEM: When the snakes emerged, so would the coyotes.

SOLUTION: Plural

PROBLEM: The creatures had roamed the Earth millions and millions of years ago.

SOLUTION:
Plural