Background.- Introduction to Prolog.- About Prolog, present and future.- Types, modes and so much more - the Prolog way.- Manuel Carro Prolog as a Knowledge Representation Language.- Prolog: Past, Present, and Future.- Writing Correct Prolog Programs.- Demonstrating Multiple Prolog Programming Techniques through a Single Operation.- Logical Semantics for Prolog.- The Janus System: A Bridge to New Prolog Applications.- Teaching Prolog.- Some Thoughts on How to Teach Prolog.- Simultaneously Teaching Mathematics and Prolog in School Curricula: A Mutual Benefit.- Logic Programming at Elementary School: Why, what and how should we teach Logic Programming to children.- Prolog Education in Selected High Schools in Bulgaria.-Introducing Prolog in Language-Informed Ways.- Tools for teaching Prolog.- Teaching Prolog with Active Logic Documents.- Simply Logical - The First Three Decades.- Prolog-based languages and systems Dynamic Logic Programming.- Combining Prolog and Imperative Computing in LPS.- Quintero Ergo: A Quest for Declarativity in Logic Programming.- Prolog applications: finalists for the Colmerauer prize ProB: Harnessing the Power of Prolog to Bring Formal Models and Mathematics to Life.- Pacioli: a PROLOG system for financial report validation.- Logic Model Processing.- Symbium: Using logic programming to streamline citizen-to-government interactions.- PROLEG: Practical Legal Reasoning System.- Contributed Prolog applications.- Logical English for Law and Education.- Exploiting Logic Programming for Runtime Verification: Current and Future Perspectives.- Prolog meets Biology.- Prolog in Automated Reasoning in Geometry.- Logic-based Explainable and Incremental Machine Learning.- Reflections on Automation, Learnability and Expressiveness in Logic-based Programming Languages.- Prolog for Scientific Explanation.- Machines as Thought Partners: Reflections on 50 Years of Prolog.
