Hello there,
"The person in charge of the campaign is a Mr. Yong, a lean, tall, rather arrogant man."
The use of the indifinete article "a" here is a little bit bwildering or is it familiar in Eng.? Could the writer here mean that there are many Mr. Yongs and she wants to designate one by using the determiner "a"?
Thanks in advance.
My Regards,