Good suggestion mmaia - I'm opening a new issue to keep track of the different output schemas that are being suggested. One thing that originally worried me a bit with yaml was its relative reliance on space-based formatting to drive meaning. GPT generally tokenizes newlines/spaces but a lot of preprepared datasets strip these out, so I preferred the explicitness of a json that's idempotent to spaces. Have you tried using this approach for non-tabular or nested data like lists or dictionaries?
