Student or Learner
"Aaron went to the counter and confirmed his Internet booking. The tall blonde advertisement for Sweden led him to the workstation and logged him on."
(Aaron's in a library.)
Does the library use a real person to do advertisement for apparently something to do with Sweden?
(Not a teacher)
'advertisement for Sweden' here is an adjective, describing the woman. It refers to the fact that she looks like a stereotypical Swedish female. If an advertisement were ever to be made about Swedish stereotypes, a female such as her would be 'appropriate'. It is not to be taken seriously, of course.