%parent = ( 
       "europe" => {
	   "london"    => "london",
	   "moscow"     => "moscow",
       },
       "asia"     => {
	    "tokyo"   => "tokyo", 
	    "seoul"   => "seoul",
	     },
       "africa"    => { 
	    "cario"   => "cariro", 
	    "algiers"   => "algiers", 
	    },
     );