query: embed.html##defaultView:Timeline
  SELECT DISTINCT ?author ?authorLabel ?image ?date WHERE {
    ?author wdt:P31 wd:Q2537 .
    ?author wdt:P575 ?date .
    OPTIONAL {?author wdt:P18 ?image .}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "en, de, fr, es, it, cz" }
  } 