instruction:
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.
question:
The dog promptly dropped to a sitting position, his tail still wagging furiously.
answer:
Singular


question:
The earliest histories were all there.
answer:
Plural


question:
The email, as it was open and apparently unfinished, could have easily been a clue as to the whereabouts of General White and his family.
answer:

Singular