You might also know http://quepy.machinalis.com/ http://quepy.machinalis.com/ I have been working on similar stuff. I started with a graphdb in pure Python fil

You might also know http://quepy.machinalis.com/ http://quepy.machinalis.com/ I have been working on similar stuff. I started with a graphdb in pure Python file-based then switched to EAV and bsddb. Nowdays I work mainly on https://github.com/amirouche/hoply/ https://github.com/amirouche/hoply/ and https://github.com/awesome-data-distribution/datae https://github.com/awesome-data-distribution/datae. I have not touched yet the NL to database query part because there is no silver bullet. At the end of the day, one need a use case, existing problems to come up with a solution. I learned the hard way that coming up with an elegant solution is not enough it must help with an actual need. For that, there is no silver bullet either. Experience helps. Being curious helps too. I thought that the chatbot mania would stir new tools. Chatbots are narrow. See also: - https://github.com/opencog/ https://github.com/opencog/ - https://en.wikipedia.org/wiki/Concept_search https://en.wikipedia.org/wiki/Concept_search - legaltech