query: #defaultView:Timeline
  PREFIX dct: <http://purl.org/dc/terms/>
  PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
  PREFIX dbc: <http://dbpedia.org/resource/Category:>
  PREFIX yago: <http://dbpedia.org/class/yago/>
  
  SELECT  DISTINCT ?wditem ?wditemLabel ?date ?work ?workLabel ?image WHERE {  
      SERVICE <http://dbpedia.org/sparql> {
          ?item dct:subject|dct:subject/skos:broader|dct:subject/skos:broader/skos:broader dbc:Italian_Renaissance_humanists ;
  #        ?item rdf:type yago:WikicatPioneersOfPhotography ;
                owl:sameAs ?wditem FILTER regex (?wditem, "wikidata.org") .
      }        
      SERVICE <https://query.wikidata.org/sparql> {
  	  ?wditem wdt:P569 ?date .
  #      OPTIONAL {?wditem wdt:P800 ?work }
        OPTIONAL {?wditem wdt:P18 ?image } .  
        ?wditem rdfs:label ?wditemLabel FILTER (LANG(?wditemLabel)="en") .
      }
  }
  