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.

The countess lifted the bowl from Madeline's arms.
Plural

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

Lena's posture improved as she spoke.

Singular