p3p#PolicyResource  A PolicyReference or a Policy
  supertype:  P3P_thing (pm)
  subtype:  PolicyRefResource  A collection of, or a single, PolicyReference
     subtype:  PolicyRef__policy_reference  A Policy Reference
  subtype:  Policy  A P3P Policy
  subtype:  PolicyReferences  A collection of Policy References

No statement uses or specializes PolicyResource; click here to add one.