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.

Q: the two Masters cried in stunned horror.

A: Singular
****
Q: Her prayers about him taking a turn for the worse must have come true.

A: Plural
****
Q: The caller was one of his security guards.

A:
Singular
****