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Chat-80

Originally published over two decades ago by researchers at Edinburgh University, Chat-80 was one of the first major demonstrations of Prolog-based natural language processing. Now in the public domain, Chat-80 provides a fascinating sample application, comprising a natural language interface to a geographical database. Please note that this demonstration uses the original 1980 data: one or two countries have appeared, vanished, or been renamed since then!

To run the demo or view the source code, please select from the following links: