18. The system of claim 17, wherein the client terminal traces directed edges of the single graph to locate accessibility nodes that are associated with the final query result, and identifies parts of the separated portion associated with located accessibility nodes as the parts that contribute to the final result.
17. The system of claim 16, wherein the client terminal connects first, second, third, and fourth accessibility nodes of each of the accessibility graphs to first, second, third and fourth accessibility nodes of accessibility graphs of other separated portions based on the cross links of corresponding input nodes and corresponding output nodes to form the single graph.