public void put(long qid, String lang, String value) {
      Map<String, String> map = data.get(qid);
      if (map == null) {
        data.put(qid, map = new TreeMap<>());
      }
      map.put(lang, value);
    }
Stores a name translation for {@code qid} in {@code lang}.
planetiler-core/src/main/java/com/onthegomap/planetiler/util/Wikidata.java