Implement Backward-chaining algorithm for propositional logic

Your job is to implement backward-chaining algorithm for propositional logic. The goal of the system is to determine whether a single propositional symbol - the query - is entailed by the knowledge base. Your operators will be defined with the following symbol notations: NOT X ~X X AND Y X && Y X IMPLIES Y X => Y Basically, you wiil be given an [login to view URL] file, then your job is to create a program to read it and solve the problem. *** More details** are included in my attach doc file, please take a look and see if you are able to do it. ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform ** The program has to work 100% on "Unix". ** Make sure the program compiled on Unix using "g++" command. Thanks!