query: embed.html##defaultView:Map
  SELECT DISTINCT ?person ?coord ?layer
  WHERE
  {
    wd:Q3044 wdt:P40* ?person.
    ?person wdt:P20 ?PoB ; wdt:P570 ?DoB .
    ?PoB wdt:P625 ?coord .
    BIND( ROUND(year(?DoB)/100) AS ?layer).
  }