Extensible select and enumeration types

and their elements in schema TEXTUAL_EXPRESSION_REPRESENTATION_MIM taking into account BASED_ON types


 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 classification_item - EXTENSIBLE GENERIC_ENTITY SELECT
          representation_context
          text_based_representation

 text_based_item_select - EXTENSIBLE GENERIC_ENTITY SELECT
          included_text_based_representation
          textual_expression_composition
          textual_expression_representation_item