[rules-users] To insert facts or use the find clause?

I would like to use Drools to reason about a graph structure using queries. The graph consists of a collection of nodes, which in turn each have a collection of edges to nodes. Currently, I have a single fact in the Drools working memory, the graph. My queries then use the "from" clause to obtain information about the nodes and edges within the graph. I was wondering if it would be better to instead traverse the entire structure adding each node and edge as facts into the working memory. Any ideas? Thanks!