query: SELECT DISTINCT ?item ?itemLabel ?ad ?adLabel WHERE {
           ?item wdt:P31 ?item1.
           ?item1 wdt:P279 wd:Q47574.
    	OPTIONAL { ?item wdt:P5061 ?ad }
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "ar" }
    }
  LIMIT 9500