SPARQL query to finding wikidata items Which does not have descriptions

#no description
SELECT ?item ?itemLabel ?itemLabel_ml
WHERE 
{
  ?item wdt:P106 wd:Q11900058 .
  optional {?item rdfs:label ?itemLabel_ml . filter(lang(?itemLabel_ml)="ml")}
  filter not exists {?item schema:description ?itemDesc_ml . filter(lang(?itemDesc_ml)="ml")}
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}

by - Tagishsimon (talk)