query: #defaultView:Timeline
  SELECT ?item ?itemLabel ?img ?date ?layerLabel
  {
  	?item wdt:P31 wd:Q39715 . 
  	?item p:P793 [ ps:P793 wd:Q2192508 ; pq:P585 ?date ]
      OPTIONAL { ?item wdt:P18 ?img }
      OPTIONAL { ?item wdt:P17 ?layer }
      SERVICE wikibase:label { bd:serviceParam wikibase:language "en"  }  
  }
  ORDER BY ASC(?date)