This query retrieves all accepted submissions from the RuleML-2007 easy chair system (database)
The RuleML-2007 organizational agent (Prova inference service) delegates the query to 
the RuleML-2007 program chair according to the repsonsibility-assignment matrix 
(defined in an external OWL file).
The Program Chair agent (Prova inference service) retrieves the submitted papers according to 
its internal rule-based decision logic and its dynamic interfaces to the database and returns the answers
to the organizational agent.