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 restaurants were all open, and people were eating dinner outdoors.

SOLUTION: Plural

PROBLEM: Ahead he could see two Agents, one on either side of the doors.

SOLUTION: Plural

PROBLEM: The senator had put someone in charge of handling them and deciding which, if any, interviews would be beneficial to the campaign.

SOLUTION:
Singular