query: # People sharing the same name .. somehow, by Jura1, 2016-08-01
  SELECT 
  	?gnLabel ?gn2Label 
  	?item ?itemLabel ?itemDescription 
  	?item2 ?item2Label ?item2Description 
  {
    	?item wdt:P735 ?gn 	; wdt:P734 ?fn .   	
    	?gn wdt:P1533 ?fn2 .
    	?item2 wdt:P734 ?fn2 ; wdt:P735 ?gn2 .	
    	?gn2 wdt:P1533 ?fn
  	FILTER ( str(?item) < str(?item2) )         
    	SERVICE wikibase:label {  bd:serviceParam wikibase:language "en" .}
  }
  ORDER BY ?gnLabel ?gn2Label