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Minsky’s 1974 frame-and-slot approach offered a powerful way to model domains but struggled because schemas had to be manually translated into databases and validation rules. LPG Modeler by Volodymyr Pavlyshyn addresses this by compiling a single YAML schema into multiple graph, RDF, and schema formats while preserving constraints and clearly reporting where they cannot be carried forward.

https://www.lpg-modeler.com/index.html