Belgrade resident (4)
I believe the answer is:
serb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">belgrade resident</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Belgrade is the capital of Serbia)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for serb that I've seen before include "One from Belgrade" , "Someone from Belgrade?" , "Native of the Balkans" , "Eastern European" , "Balkan native" .)