query: #title: most linked wikis on values of property P1754
  SELECT ?wiki (COUNT( DISTINCT ?item ) as ?count) (SAMPLE(?item) as ?sample)
  {
  	?p wdt:P1754 ?item . 
      [] schema:about ?item ; schema:isPartOf ?wiki . 
      SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }      
  }
  GROUP BY ?wiki 
  ORDER BY DESC(?count) ?wiki