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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 result(self, input_sequence: str, config: Optional[BasicConfig] = None) -> Any: """ Execute the workflow. :param input_sequence: The input sequence. """

        # Step 1.
        sequential_labelers = [
                sl_cls(input_sequence, config) for sl_cls in self.sequential_labeler_classes
        ]
        index_labels_generator = ((index, {
                type(labeler): labeler.label(index) for labeler in sequential_labelers
        }) for index in range(len(input_sequence)))

        # Step 2.
        label_processor = self.label_processor_class(input_sequence, index_labels_generator, config)
        label_processor_result = label_processor.result()

        # Step 3.
        output_generator = self.output_generator_class(input_sequence, label_processor_result,
                                                       config)
        return output_generator.result()