docs: def _get_answer(self, query, **kwargs):
          # send request to getty
          """ Returns the results of the Sparql query to a :class:`lst` of concepts and collections.
              The return :class:`lst`  can be empty.
  
          :param query (str): Sparql query
          :returns: A :class:`lst` of concepts and collections. Each of these
              is a dict with the following keys:
              * id: id within the conceptscheme
              * uri: :term:`uri` of the concept or collection
              * type: concept or collection
              * label: A label to represent the concept or collection.
          """
          request = self.base_url + "sparql.json"
          try:
              res = self.session.get(request, params={"query": query})
          except ConnectionError as e:
              raise ProviderUnavailableException("Request could not be executed - Request: %s - Params: %s" % (request, query))
          if res.status_code == 404:
              raise ProviderUnavailableException("Service not found (status_code 404) - Request: %s - Params: %s" % (request, query))
          if not res.encoding:
              res.encoding = 'utf-8'
          r = res.json()
          d = {}
          for result in r["results"]["bindings"]:
              uri = result["Subject"]["value"]
              if "Term" in result:
                  label = result["Term"]["value"]
              else:
                  label = "<not available>"
              item = {
              'id': result["Id"]["value"],
              'uri': uri,
              'type': result["Type"]["value"].rsplit('#', 1)[1],
              'label': label,
              'lang': result["Lang"]["value"]
              }
  
              if uri not in d:
                  d[uri] = item
              if tags.tag(d[uri]['lang']).format == tags.tag(self._get_language(**kwargs)).format:
                  pass
              elif tags.tag(item['lang']).format == tags.tag(self._get_language(**kwargs)).format:
                  d[uri] = item
              elif tags.tag(item['lang']).language and (tags.tag(item['lang']).language.format == tags.tag(self._get_language()).language.format):
                  d[uri] = item
              elif tags.tag(item['lang']).format == tags.tag('en').format:
                  d[uri] = item
          return list(d.values())