query: #defaultView:Timeline
  SELECT DISTINCT ?author ?authorLabel ?image ?date WHERE {
    {?author wdt:P31/wdt:P279* wd:Q19723444 .}
    UNION
    {?author wdt:P31/wdt:P279* wd:Q17517 .}
    ?author wdt:P571 ?date .
    OPTIONAL {?author wdt:P18 ?image .}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "de, en, fr, es, it, cz" }
  } 
  