query: SELECT ?person ?personLabel (GROUP_CONCAT(DISTINCT CONCAT("http://www.treccani.it/enciclopedia/",?ei,"_(Enciclopedia-Italiana)"); SEPARATOR=', ') AS ?eiUrl)
  WHERE {
    ?person wdt:P4223 ?ei . 
    ?person wdt:P31 wd:Q5 .
    { ?person wdt:P27 wd:Q38 . } UNION { ?person wdt:P27 wd:Q172579 . }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "it,en" . }
  } GROUP BY ?person ?personLabel