update code
update provenance advice to capture the patientAssignment activity (need to test)
update code(not finished yet)
update code
added some static namespace strings
updated the prov-api dependency, the new version added two methods in ProvenanceBundle class : addWasStartedBy(activity,agent), which can be used to add a statement describing an activity was started by an agent; addWasAssignedTo(entity1,entity2), which can be used to add a statement describing an entity1 being assigned to entity2