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: " Your new teacher, the principal, and Mrs. Groves, from the Superintendent's office.

SOLUTION: Singular

PROBLEM: The dragon lay staked and tethered, a dozen paces away.

SOLUTION: Singular

PROBLEM: Seriously, those tunnels were awesome !

SOLUTION:
Plural