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: There's a mumbling from the heap.

SOLUTION: Singular

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

SOLUTION: Singular

PROBLEM: ' The last leader gave me some advice just before he died, and do you know what it was ?

SOLUTION:
Singular