code: def load_text(self, text, verbose):
          
          if verbose: printDebug("----------")
          if verbose: printDebug("Reading: '%s ...'" % text[:10])
          success = False
          for f in self.rdf_format_opts:
              if verbose: printDebug(".. trying rdf serialization: <%s>" % f)
              try:
                  self.rdfgraph.parse(data=text, format=f)
                  if verbose: printDebug("..... success!")
                  success = True
                  self.sources_valid += ["Text: '%s ...'" % text[:10]]
                  break
              except:
                  if verbose: printDebug("..... failed", "error")
  
          if not success == True:
              self.loading_failed(self.rdf_format_opts)
              self.sources_invalid += ["Text: '%s ...'" % text[:10]]
docs: :param text:
          :param rdf_format_opts:
          :param verbose:
          :return: