It was very influential and had all kinds of interesting stories (e.g. https://en.wikipedia.org/wiki/Fifth_Generation_Computer_Systems https://en.wikipedia.org/

It was very influential and had all kinds of interesting stories (e.g. https://en.wikipedia.org/wiki/Fifth_Generation_Computer_Systems https://en.wikipedia.org/wiki/Fifth_Generation_Computer_Syst...). I'm not sure what qualifies as dead. Prolog is still around although as a small and specific community, perhaps comparable in size to the APL community at least within an order of magnitude.