Example: Entity representation_item (part 43)
Because of missing constraint all subtypes are implicitly ANDOR
compound_representation_item
coordinated_representation_item
descriptive_representation_item
externally_defined_representation_item
fea_material_property_representation_item
geometric_representation_item
measure_representation_item
qualified_representation_item
tensor_representation_item
topological_representation_item
value_representation_item
=> very very huge number of combination