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]: Washoe's progress with ASL was rapid ; by 1971, she had a vocabulary of 160 signs, which she used in conversation.
[EX A]: Singular

[EX Q]: The opening strains of a Strauss waltz filled the room, and the dancers looked about in confusion.
[EX A]: Plural

[EX Q]: Meanwhile, the Hand intertwined its fingers with his and they began twiddling thumbs.
[EX A]:
Singular