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: " Flight # 408 now loading at gate 4B on the north concourse, " came over the loudspeaker.

A: Singular
****
Q: Her latest release, Jumping Ship, is a dedication to her country of birth and an introductory novella to the Island Hopping Series.

A: Singular
****
Q: Their horns rocked from side to side, watching, waiting.

A:
Plural
****