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 deep boom of the two shots, which had been batting to and fro among the mountains, died away.

SOLUTION: Singular

PROBLEM: His attempts to remain secluded failed with every head turned in his direction.

SOLUTION: Plural

PROBLEM: No real medical facilities and yet we did better than some hospitals.

SOLUTION:
Plural