query-dc680f2bdec38cd84d69ef173f0fc1f8

rq turtle/ttl

Countries of Europe (1900 to present)I wonder what would be a good way to query them. Based on the query, we can try to fix items that don't quite match it. 08:58, 11 January 2022 (UTC) JuraI used 1900 as starting point as it obviously gets harder further one goes back. --- 10:18, 11 January 2022 (UTC)) talk (Infrastruktur. Any former country without these two properties should be treated like an error. Likewise any current country without a replaces claim is an error. --(Q33946)Czechoslovakia I won't bore you with anything obvious, but if this is meant for maintenance, you might be interested in following the replaces/replaced-by chains as they appear to be broken in several places such as Maybe this as a start?

Use at

PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
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 p: <http://www.wikidata.org/prop/>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT DISTINCT ?item ?itemLabel WHERE {
  ?item p:P31/wdt:P279* ?st ;
        wdt:P30 wd:Q46 .

  ?st ps:P31/wdt:P279* wd:Q6256 .

  OPTIONAL { ?item wdt:P576 ?dissolvedDate }
  FILTER ( !BOUND(?dissolvedDate)|| ?dissolvedDate > "1900-01-01"^^xsd:date )

  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
ORDER BY ?itemLabel

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?dissolvedDate") v3("?item"):::projected v1("?itemLabel"):::projected v4("?st") a1((" ")) a2((" ")) c10(["bd:serviceParam"]):::iri c12(["#91;AUTO_LANGUAGE#93;,en"]):::literal c7(["wd:Q6256"]):::iri c5(["wd:Q46"]):::iri f0[["(not bound(?dissolvedDate) || ?dissolvedDate > '1900-01-01^^xsd:date')"]] f0 --> v2 v3 --"p:P31"--> a1 a1 --"p:direct/P279"--> v4 v3 --"p:direct/P30"--> c5 v4 --"p:statement/P31"--> a2 a2 --"p:direct/P279"--> c7 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v3 -."p:direct/P576".-> v2 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c10 --"wikibase:language"--> c12 end