an Entity references as follows:
Scope note: This property identifies an E51 Contact Point of any type that provides access to an E39 Actor by any communication method, such as e-mail or fax. Examples: - RLG (E40) has contact point "bl.ric@rlg.org" (E51) In First Order Logic: P76(x,y) ⊃ E39(x) P76(x,y) ⊃ E51(y)