Comment by mcswell

I'm not exactly sure what you're referring to, but Fernando Pereira's dissertation included a natural language (English) program for querying a "database". Both the NLP part and the database were written in Prolog. Mid-1980s, I think. Of course both parts were "toy" in the sense that they would need to be hugely expanded to be of real world use, but they did handle some interesting things (like quantifiers, graded adjectives etc.).