its under documented, but checkout things like our OutputParsers – https://
github.com/hwchase17/lang
chain/blob/3e55f1474e5ad13f90c233b7f85480e996765e71/langchain/prompts/base.py#L67
… they can parse an LLM output into a specific format. however, it is an open question about what to do if format is not expected… retry?

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