TASK DEFINITION: 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.
PROBLEM: A giggle erupted out my mouth and I shifted my eyes from Larissa who was looking up at Marcus expectedly.

SOLUTION: Singular

PROBLEM: The museum's full of carvings just like it.

SOLUTION: Singular

PROBLEM: The one Casey lives with ? "

SOLUTION:
Plural