4. The computer program product as recited in claim 3 , wherein each of the angle data structures are further associated with an importance value, and wherein the instructions are further configured to filter the determined candidate angle data structures based at least in part on the importance values associated with the determined candidate angle data structures.
8. The computer program product as recited in claim 4 , wherein the instructions are further configured to define the parameters for the narrative story in response to user input via a user interface application.