Capital of Western Australia (5)
I believe the answer is:
perth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">capital of western australia</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for perth that I've seen before include "Australian state capital" , "Capital of Western Australia" , "Australian or Scottish city" , "City of Scotland" , "Western Australia's capital" .)