Extensible select and enumeration types

and their elements in schema Experience_arm taking into account BASED_ON types


 activity_item - EXTENSIBLE GENERIC_ENTITY SELECT

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          Experience_type
          Location
          Location_relationship
          Managed_resource
          Managed_resource_relationship
          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

 date_or_date_time_item - EXTENSIBLE SELECT
          Experience_instance

 defined_activities - EXTENSIBLE GENERIC_ENTITY SELECT
          Activity_actual
          Resource_as_realized

 defined_methods - EXTENSIBLE GENERIC_ENTITY SELECT
          Activity
          Activity_method
          Required_resource

 location_assignment_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Managed_resource

 measure_value - EXTENSIBLE SELECT
          any_number_value
          any_string_value
          length_measure
          plane_angle_measure

 person_or_organization_or_person_in_organization_select - EXTENSIBLE GENERIC_ENTITY SELECT
          Organization
          Person
          Person_in_organization

 product_based_location_representation - EXTENSIBLE GENERIC_ENTITY SELECT
          Product
          Product_version

 property_assignment_select - EXTENSIBLE SELECT
          Experience_instance

 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