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 leader of the band of urchins offered a pert salute, then moving forward he eyed Gideon in a knowing manner.

SOLUTION: Singular

PROBLEM: The rows of houses like headstones in a cemetery.

SOLUTION: Plural

PROBLEM: " Hot, hot, hot... ah, ah, ah, ah ! "

SOLUTION:
Singular