# RemoteQuestionAnswering **`class RemoteQuestionAnswering(config)`** Bases: [`BatchedStep`](../technical/libnlp/steps/standard.md#squirro.lib.nlp.steps.batched_step.BatchedStep) Step that uses an external API endpoint. It sends a batch of [`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document) to qa remote service and returns the annotated batch of [`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document) Parameters - `step` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"external"`) – external - `type` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"remote_qa"`) – remote_qa - `input_field__question` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"qa_question"`) – Input field containing the question - `input_field__context` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"qa_context"`) – Input field containing the context - `output_field__answer` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"qa_answer"`) – Output field - `max_concurrent` ([`int`](https://docs.python.org/3.11/library/functions.html#int)`, ``10`) – Maximum concurrent requests - `language_service_mapping` ([`dict`](https://docs.python.org/3.11/library/stdtypes.html#dict)`,``{}`) – Define custom service URL that should be used for the detected language. If the language is not found in the mapping, the default_worker is used and the service URL is read from the configuration service. - `default_worker` ([`str`](https://docs.python.org/3.11/library/stdtypes.html#str)`, ``"accurate"`) – Default worker that is used to read service URL from the configuration service if detected language is not found in the language_service_mapping. **Example** ```json { "step": "external", "type": "remote_qa", "language_service_mapping": { "en": "http://localhost:8000" }, "default_worker: "accurate" } ``` Methods SummaryMethods Documentation **`get_client(language, worker)`** Return type `QAClient` **`process_batch(batch)`** Process a batch of documents. If not defined will default to using self.process_doc for each document in the batch. Parameters `batch` ([`list`](https://docs.python.org/3.11/library/stdtypes.html#list)`(`[`Document`](../technical/libnlp/base.md#squirro.lib.nlp.document.Document)`)`) – List of documents Returns List of processed documents Return type [list](https://docs.python.org/3.11/library/stdtypes.html#list)([Document](../technical/libnlp/base.md#squirro.lib.nlp.document.Document))