query: embed.html#SELECT (CONCAT('-', ?qid) AS ?str) ("P31" AS ?pid) ("Q13220204" AS ?value) WHERE {
    ?item wdt:P31 wd:Q13220204.
    ?item wdt:P17 wd:Q155.
    ?item wdt:P31 wd:Q3184121.
    BIND(SUBSTR(STR(?item), (STRLEN(STR(<http://www.wikidata.org/entity/>))) + 1) AS ?qid)
  }
  LIMIT 1000