query: SELECT ?property ?propertyLabel  (count(?item) as ?count)
  WHERE
  {
    ?item wdt:P31/wdt:P279* wd:Q9143;
          ?propertyUrl [].
    ?property ?ref ?propertyUrl .
    ?property a wikibase:Property .
    ?property rdfs:label ?propertyLabel.
    FILTER(LANG(?propertyLabel)="en")
  }
  GROUP by ?property ?propertyLabel
  ORDER by ?count
  