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.

[EX Q]: Ferry glared up toward the' coder.
[EX A]: Singular

[EX Q]: The blades crashed and the room shook.
[EX A]: Plural

[EX Q]: The book's author retains sole copyright to all intellectual contributions to this book, including but not limited to text and images.
[EX A]:
Singular