a Relationship between two Plans whereby the Intended-Purpose of one Plan does Help-Achieve the Intended-Purpose of the other Plan.
(<=> (Sub-Plan-Of ?Sub-Plan ?Plan) (And (Plan ?Plan) (Plan ?Sub-Plan) (Exists (?Purpose ?Sub-Purpose) (And (Intended-Purpose ?Plan ?Purpose) (Intended-Purpose ?Sub-Plan ?Sub-Purpose) (Help-Achieve ?Sub-Purpose ?Purpose)))))
(<=> (Strategic-Action ?Strategic-Action) (And (Sub-Plan ?Strategic-Action) (Exists (?Strategy) (And (Strategy ?Strategy) (Sub-Plan-Of ?Strategic-Action ?Strategy))))) (<=> (Sub-Plan ?Sub-Plan) (And (Plan ?Sub-Plan) (Qua-Entity ?Sub-Plan) (Exists (?Plan) (Sub-Plan-Of ?Sub-Plan ?Plan))))