Former capital of West Germany (4)
I believe the answer is:
bonn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">former capital of west germany</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bonn that I've seen before include "Rhine city" , "Beethoven's birthplace, old capital" , "West German capital, 1949-90" , "First capital of the German Federal Republic" , "Former West German capital" .)