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.

[EX Q]: Then the vigil began.
[EX A]: Singular

[EX Q]: ' She knows who the witch is,' Prophet said.
[EX A]: Singular

[EX Q]: When Iraq invaded Kuwait and triggered the start of the Gulf War, the letters had slowed.
[EX A]:
Plural