[rules-users] Rule for Collection

Hi All , Can someone please help how can i write a rule for below condition - I have Student object which contains List of Courses public Class Person { private List<Course> courseList; } public Class Course { private String name; private int duration; } Now lets say the list of course inside person object contains 10 course objects and if one of the course object contain name =="XYZ" and another contain a duration = 20 hours then how i can write a rule for this. Thanks.