query: #defaultView:BubbleChart
  SELECT distinct ?item  ?itemLabel (?end - ?start as ?duration)
  
  WHERE {
    ?item (wdt:P361)* wd:Q362 .
    ?item wdt:P31/wdt:P279* wd:Q178561 .
    ?item wdt:P580 ?start .
    ?item wdt:P582 ?end .
    
   SERVICE wikibase:label {
     bd:serviceParam wikibase:language "fr" .
     }
  
  }
  
  
  