Need assignment or problem to solve for understanding Rule Engines

I want to understand rule engines better by actually making use of it. Can somebody suggest me some kind of assignment or a proble开发者_如何学JAVAm statement which should be difficult to solve without RuleEngine. I am planning to use the WWF (Windows Workflow Foundation) rule engine for the assignment.

the below assignment is not WWF specific , you can refer this case study and do your assignment. IBM ILOG Jrules sample case study - car rental policy rule assignment