N.B: It's an assignment so the code must be written by yourself. [Don't copy any other site or source ]

---@>>>Must Save the iteration Backard channing value in a txt file as output.number 6 also say that things----must save database iteration.

Instructions for reporting: 1. Strictly formatted 2. Clearly defined input 3. Major steps of processing 4. Accurate output 5. Implementation either in Prolog or in Python 6. Saved database (partial, as a sample) of intermediate activities