Extensible select and enumeration types

and their elements in schema Position_in_organization_arm taking into account BASED_ON types


 activity_item - EXTENSIBLE GENERIC_ENTITY SELECT

 certification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Qualification_assignment

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Experience_type
          Location
          Location_relationship
          Managed_resource
          Managed_resource_relationship
          Person_or_organization_or_person_in_organization_in_position_relationship
          Position
          Position_group
          Position_group_relationship
          Position_position_type_assignment
          Position_relationship
          Position_type
          Qualification_type
          Required_resource
          Required_resource_assignment
          Required_resource_relationship
          Resource_as_realized
          Resource_as_realized_assignment
          Resource_as_realized_relationship
          Resource_event
          Resource_event_correspondence_relationship
          Resource_event_relationship
          Resource_item
          Resource_item_assignment
          Resource_item_relationship
          Type_of_person
          Type_of_person_assignment
          Type_of_person_definition
          Type_of_person_definition_relationship
          Type_of_person_definition_required_attributes_relationship

 date_or_date_time_item - EXTENSIBLE SELECT
          Experience_instance
          Qualification_assignment

 defined_activities - EXTENSIBLE GENERIC_ENTITY SELECT
          Activity_actual
          Resource_as_realized

 defined_attributes - EXTENSIBLE GENERIC_ENTITY SELECT
          Experience_type
          Qualification_type

 defined_methods - EXTENSIBLE GENERIC_ENTITY SELECT
          Activity
          Activity_method
          Required_resource

 event_item - EXTENSIBLE GENERIC_ENTITY SELECT

 location_assignment_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Managed_resource

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 organization_or_person_in_organization_item - EXTENSIBLE SELECT
          Qualification_assignment
          Qualification_type

 person_or_organization_or_person_in_organization_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Organization
          Person
          Person_in_organization

 position_context_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Organization
          Position_group
          Project

 position_group_item - EXTENSIBLE GENERIC_ENTITY SELECT

 position_item - EXTENSIBLE GENERIC_ENTITY SELECT

 position_person_or_organization_or_person_in_organization_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Organization
          Person
          Person_in_organization

 position_type_item - EXTENSIBLE GENERIC_ENTITY SELECT

 product_based_location_representation - EXTENSIBLE GENERIC_ENTITY SELECT
          Product
          Product_version

 project_item - EXTENSIBLE SELECT

 property_assignment_select - EXTENSIBLE SELECT
          Experience_instance
          Type_of_person_definition

 qualifications_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Organization
          Person
          Person_in_organization

 represented_definition - EXTENSIBLE SELECT
          Assigned_property
          Independent_property

 required_resource_item - EXTENSIBLE GENERIC_ENTITY SELECT

 resource_as_realized_item - EXTENSIBLE GENERIC_ENTITY SELECT

 resource_assignment_item - EXTENSIBLE GENERIC_ENTITY SELECT

 resource_item_select - EXTENSIBLE GENERIC_ENTITY SELECT

 type_of_person_item_select - EXTENSIBLE GENERIC_ENTITY SELECT