City in Yemen (4)
I believe the answer is:
aden
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">city in yemen</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 aden that I've seen before include "Former Br. Gulf colony" , "Dane in seaport of Yemen" , "Red Sea port" , "Yemen's chief port" , "Main port of Yemen" .)