query: #defaultView:Map 
  SELECT DISTINCT ?author ?authorLabel ?image ?coord WHERE {
    ?author wdt:P31 wd:Q11269813 .
    ?author wdt:P625 ?coord .
    OPTIONAL {?author wdt:P18 ?image .}
    SERVICE wikibase:label { bd:serviceParam wikibase:language "de, en, fr, es, it, cz" }
  } 
  