Instructions: In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Input: The Ruhr Area ( " " ) is an urban area in North Rhine-Westphalia , Germany .
Output:
The Ruhr ( ; -RSB- ) , also referred to as Ruhr district , Ruhr region , Ruhr area or Ruhr valley , is a polycentric urban area in North Rhine-Westphalia , Germany .