Intellectual Property rights are traded for broadcasting FIFA World Cup matches, for authorising a new edition (for the umpteenth time) of the Beatles "Yesterday" or for displaying movies in the airplane. These agreements are reached after oral negotiations and are reflected in narrative (i.e. natural language) contracts, reflecting complex rules and norms. But, what if these contracts could be created and executed in a digital marketplace?
In an integral Information System, the transferred rights should only be executed if certain conditions hold (prohibitions, obligations etc.). This session gives an overview on the representation alternatives and the methods to perform this evaluation, from a practical point of view: procedural programming, subsumption on a DL model and OWL2RL rules execution, comparing the results achieved in actual projects.