Relation p3p#user.business-info.postal.postalcode__postalcode (p3p#StructuredDataElement,p3p#User.business-info.postal.postalcode)  Postal Code
  p3p#extends:  "user.business-info.postal"
  supertype:  p3p#dataElementComponent__data_element_property (p3p#StructuredDataElement,?)  A part of a data structure
     supertype:  pm#P3P_relation (?,?)
        supertype:  pm#relation_coming_from_an_ontology (*)
           supertype:  pm#relation_for_an_application (*)  relation introduced by an application
              supertype:  pm#relation_playing_a_special_role (*)  this type permits to categorize relations according to their roles ; this is a traditional but quite subjective way of categorizing relations
                 supertype:  pm#relation__related_thing__relatedthing___related_with (*)  type for any relation (unary, binary, ..., *-ary) and instance of pm#relation_type


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