query-17096db6f7e6793a10a0b559d3902713

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX ps: <http://www.wikidata.org/prop/statement/>
PREFIX pq: <http://www.wikidata.org/prop/qualifier/>
PREFIX p: <http://www.wikidata.org/prop/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?item1 ?item1Label ?country1 ?country1Label ?item2 ?item2Label ?country2 ?country2Label ?place ?placeLabel ?startDate ?endDate WHERE {
  ?item1 wdt:P1412 wd:Q143.
  ?item1 p:P26 ?statement.
  ?statement ps:P26 ?item2.
  ?item2 wdt:P1412 wd:Q143.
  OPTIONAL { ?statement pq:P580 ?startDate. }
  OPTIONAL { ?statement pq:P582 ?endDate. }
  OPTIONAL { ?statement pq:P2842 ?place. }
  OPTIONAL { ?item1 wdt:P27 ?country1. }
  OPTIONAL { ?item2 wdt:P27 ?country2. }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "eo". }
  FILTER((STR(?item1)) < (STR(?item2)))
}

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v7("?country1"):::projected v8("?country2"):::projected v5("?endDate"):::projected v1("?item1"):::projected v2("?item2"):::projected v6("?place"):::projected v4("?startDate"):::projected v3("?statement") c10(["bd:serviceParam"]):::iri c12(["eo"]):::literal c2(["wd:Q143"]):::iri f0[["str(?item1) < str(?item2)"]] f0 --> v1 f0 --> v2 v1 --"p:direct/P1412"--> c2 v1 --"p:P26"--> v3 v3 --"p:statement/P26"--> v2 v2 --"p:direct/P1412"--> c2 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."p:qualifier/P580".-> v4 end subgraph optional1["(optional)"] style optional1 fill:#bbf,stroke-dasharray: 5 5; v3 -."p:qualifier/P582".-> v5 end subgraph optional2["(optional)"] style optional2 fill:#bbf,stroke-dasharray: 5 5; v3 -."p:qualifier/P2842".-> v6 end subgraph optional3["(optional)"] style optional3 fill:#bbf,stroke-dasharray: 5 5; v1 -."p:direct/P27".-> v7 end subgraph optional4["(optional)"] style optional4 fill:#bbf,stroke-dasharray: 5 5; v2 -."p:direct/P27".-> v8 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c10 --"wikibase:language"--> c12 end