query: SELECT ?item ?rkdurl WHERE {
    wd:P350 wdt:P1630 ?formatterurl .
    ?item wdt:P31 wd:Q3305213 . 
    ?item wdt:P350 ?rkdid . 
    MINUS { ?item p:P170 [] }  . 
   BIND(REPLACE(?rkdid, '^(\\d+)$', CONCAT("[", ?formatterurl, " $1]")) AS ?rkdurl)  .
  } LIMIT 1000