# Chart of P921 usage
# Note: this chart is based on https://www.wikidata.org/wiki/Template:Property_uses
# which is updated once a day by PLbot

#defaultView:LineChart
SELECT ?DAY ?COUNT ?property {
  values (?property) {("921") ("50") ("2093")}
  BIND (CONCAT("|", ?property, "=") AS ?p)
  BIND (CONCAT(".+\\", ?p, "(\\d+).+") AS ?r)
  SERVICE wikibase:mwapi {
      bd:serviceParam wikibase:api "Generator" ; wikibase:endpoint "www.wikidata.org" ; mwapi:generator "allpages" ;
      mwapi:gapfrom "Property_uses" ; mwapi:gapto "Property_uses" ; mwapi:gapnamespace "10" ;
      mwapi:prop "revisions" ; mwapi:rvprop "content|timestamp" ; mwapi:rvlimit "50" ; mwapi:rvuser "PLbot" .
      ?t1 wikibase:apiOutput "revisions/rev[1]/@timestamp" . ?r1 wikibase:apiOutput "revisions/rev[1]/text()" .
  }
  BIND (IF(CONTAINS(?r1, ?p), xsd:integer(REPLACE(?r1, ?r, "$1")), -1) AS ?COUNT)
  FILTER (?COUNT != -1)
  BIND (xsd:dateTime(?t1) AS ?DAY)
}