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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def respond(self, text, sessionID = "general"):
 """ Generate a response to the user input. :type text: str :param text: The string to be mapped :rtype: str """

        text =  self.__normalize(text)
        previousText = self.__normalize(self.conversation[sessionID][-2])
        text_correction = self.__correction(text)
        current_topic = self.topic[sessionID]
        current_topic_order = current_topic.split(".")
        while current_topic_order:
          try:return self.__response_on_topic(text, previousText, text_correction, current_topic, sessionID)
          except ValueError as e:pass
          current_topic_order.pop()
          current_topic = ".".join(current_topic_order)
        try:return self.__response_on_topic(text, previousText, text_correction, current_topic, sessionID)
        except ValueError as e:return "Sorry I couldn't find anything relevant"