query-492d495d686a5ccebab8188d282c78a4

PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX bd: <http://www.bigdata.com/rdf#>
PREFIX target: <http://www.wikidata.org/entity/Q671384>

SELECT 
  ?items

  ?start_date

  ?exhibition ?exhibitionLabel
  (CONCAT("#exhibition/", SUBSTR(STR(?exhibition), 32)) AS ?exhibitionUrl)
  ?exhibitionDescription

  ?example_item ?example_itemLabel  
WHERE {
   {
  SELECT 
    (COUNT(?item) AS ?items)
    ?exhibition
    (SAMPLE(?item) AS ?example_item)
    (xsd:date(MIN(?start_datetime)) AS ?start_date)
  WHERE {
    ?item wdt:P195 target: ;
          wdt:P608 ?exhibition .
    OPTIONAL { ?exhibition wdt:P580 ?start_datetime }
  }
  GROUP BY ?exhibition
}  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
ORDER BY DESC(?items)

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v5("?_anon_42b5416610844a34809f33a099ae9de186883") v6("?example_item"):::projected v3("?exhibition"):::projected v8("?exhibitionUrl") v2("?item") v6("?items"):::projected v7("?start_date"):::projected v4("?start_datetime") c6(["bd:serviceParam"]):::iri c8(["#91;AUTO_LANGUAGE#93;,en"]):::literal c2([http://www.wikidata.org/entity/Q671384]):::iri v2 --"wdt:P195"--> c2 v2 --"wdt:P608"--> v3 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."wdt:P580".-> v4 end bind3[/"min(?start_datetime)"/] v4 --o bind3 bind3 --as--o v5 bind4[/"count(?item)"/] v2 --o bind4 bind4 --as--o v6 bind5[/"sample(?item)"/] v2 --o bind5 bind5 --as--o v6 bind6[/"http://www.w3.org/2001/XMLSchema#date()"/] null --o bind6 bind6 --as--o v7 subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c6 --"wikibase:language"--> c8 end bind7[/"concat('#exhibition/',substring(str(?exhibition),'32^^xsd:integer'))"/] v3 --o bind7 bind7 --as--o v8