query: SELECT  ?item ?text
    WITH {
      SELECT ?item ?mainLabel ?itemLabel (GROUP_CONCAT(DISTINCT(?altLabel); separator = " ") AS ?altLabel_list) WHERE {
      ?item wdt:P6379 [] .
    MINUS {  ?item wdt:P31 wd:Q5.}
    MINUS {  ?item  wdt:P1454 ?rechtsvorm.}
  
      OPTIONAL { ?item skos:altLabel ?altLabel . FILTER (lang(?altLabel) = "nl") }
      OPTIONAL { ?item rdfs:label  ?mainLabel . FILTER (lang(?mainLabel) = "nl") }
      SERVICE wikibase:label { bd:serviceParam wikibase:language "nl" .}
   }
  GROUP BY ?item ?mainLabel ?itemLabel ?itemDescription
  } AS %results
  WHERE {
      INCLUDE %results.
      ?item wdt:P31 ?iseen.
    BIND(CONCAT (STR( ?mainLabel ), " ", ?altLabel_list )  AS ?text ) .
    FILTER REGEX (?text, "(?<!\\w)([bnc]\\.?v\\.?