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 Author holds exclusive rights to this work.

SOLUTION: Singular

PROBLEM: A flat screen television fitted snugly into the upper left corner wall.

SOLUTION: Singular

PROBLEM: Those winds blew down an old Aspen across one of the hiking paths.

SOLUTION:
Plural