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.

Q: Several passengers raise their digital cameras and cellphones to snap both Alex and myself.

A: Plural
****
Q: Its fur was mottled gray and cream ( like a case of mange, Michael said ), and its left eye had a permanent squint.

A: Singular
****
Q: A siren, more piercing and invasive than I thought possible erupted around the building.

A:
Singular
****