query-2361393957899479b5e3326e3469b83b

rq turtle/ttl

Number of articles by year

Use at

PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT DISTINCT ?year (COUNT(?item) AS ?articles)  WHERE {  
  ?item wdt:P1433 wd:Q220370 .
  OPTIONAL {?item wdt:P577 ?published} .
  BIND(xsd:integer(YEAR(?published)) as ?year) 
}
GROUP BY ?year
ORDER BY ASC(?year)

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v4("?articles") v2("?item"):::projected v3("?published") v4("?year"):::projected c2(["wd:Q220370"]):::iri v2 --"wdt:P1433"--> c2 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v2 -."wdt:P577".-> v3 end bind0[/"http://www.w3.org/2001/XMLSchema#integer(year-from-dateTime(?published))"/] v3 --o bind0 bind0 --as--o v4 bind2[/"count(?item)"/] v2 --o bind2 bind2 --as--o v4