[Semantics] Policy expressions that are formal contracts (or licenses) stipulating all the terms of usage and all the parties involved. [Comment] Must contain at least the Party entity with Assigner role and a Party with Assignee role. The latter being granted the terms of the Agreement from the former. [Identifier] 
Agreement
A g r e e m e n t
O f f e r
P r i v a c y
R e q u e s t
S e t
T i c k e t