INSTANCE optional_xor_empty_aggregation#3; extracted_from = {explicit_attribute#297}; corresponds_to = {correspondence#95}; attribute = explicit_attribute#297; END_INSTANCE;
INSTANCE optional_xor_empty_aggregation#4; extracted_from = {explicit_attribute#309}; corresponds_to = {correspondence#95}; attribute = explicit_attribute#309; END_INSTANCE;