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: A million notions flew through my head.

SOLUTION: Plural

PROBLEM: The timbre of the engines climbed, and the Bell accelerated to its maximum speed.

SOLUTION: Singular

PROBLEM: But context is inevitable when a fallible human being speaks of evil.

SOLUTION:
Singular