Searching this site for chat leads to a chat server implemented with Prolog : https://rosettacode.org/wiki/Chat_server#Prolog
HTH
Also to quote text as Prolog source code use
` and not '. See: Language highlighting
Searching this site for chat leads to a chat server implemented with Prolog : https://rosettacode.org/wiki/Chat_server#Prolog
HTH
Also to quote text as Prolog source code use
` and not '. See: Language highlighting