query: SELECT ?item ?lang ?alias {
    ?item skos:altLabel ?alias .
    BIND(LANG(?alias) AS ?lang) .
     FILTER( ?lang = "lv" ) .
    # FILTER( ?lang IN ( "my_language1", "my_language2" ) ) .
    MINUS {
      ?item rdfs:label ?label .
      BIND(LANG(?label) AS ?lang1) .
      FILTER(?lang1 = ?lang) .
    } .
  } LIMIT 500