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

Ex Output:
Singular

Ex Input:
" The mayor of Perimeter 1 loved the product and he has given us his signature in support. "

Ex Output:
Singular

Ex Input:
With my mouth slightly opened a few drops fell on my tongue.

Ex Output:
Plural