query: SELECT ?institution ?institutionLabel (COUNT(?item) AS ?total) (GROUP_CONCAT(DISTINCT ?LieuLabel; SEPARATOR = ", ") AS ?Lieux) WHERE {
    ?institution (wdt:P31/wdt:P279*) wd:Q166118.
    ?institution wdt:P17 wd:Q39.
    OPTIONAL {
      ?institution wdt:P131 ?Lieu.
      OPTIONAL {
        ?Lieu rdfs:label? ?LieuLabel.
        FILTER((LANG(?LieuLabel)) = "fr")
      }
    }
    OPTIONAL { ?item wdt:P485 ?institution. }
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],fr,de,it,en". }
  }
  GROUP BY ?institution ?institutionLabel
  ORDER BY DESC(?total) ?institutionLabel