Implement in Prolog PageRank

Hello, I have to build a prolog program that calculates the pagerank of the graph found in wikipedia. Implement in Prolog the PageRank algorithm as described at [login to view URL] Test your program with the graph shown in the Wikipedia picture. Deadline: Thursday Oct 13 at midnight. Hint: you can reprsent the graph as a predicate edge/2 and the rank as a dynamic predicate rank_of/2 having a vertex as the first argument and its rank the second. You can use assert and retractall to update the ranks at each step. I have an attempt made for the project but i cant connect all the vertices and nodes. I cant get to calculate the rank of each node. My code starts by calculating the rank of one node. Its missing the iterating code. I might be making it harder that what it sounds.