code: def _extract(self, attribute) -> str:
          
          attr_data = self.journey.JourneyAttributeList.JourneyAttribute[
              self.attr_types.index(attribute)
          ].Attribute
          attr_variants = attr_data.xpath("AttributeVariant/@type")
          data = attr_data.AttributeVariant[attr_variants.index("NORMAL")].Text.pyval
          return str(data)
docs: Extract train information.