INSTANCE optional_xor_empty_aggregation#3; extracted_from = {explicit_attribute#290}; corresponds_to = {correspondence#3}; attribute = explicit_attribute#290; END_INSTANCE;
INSTANCE optional_xor_empty_aggregation#4; extracted_from = {explicit_attribute#291}; corresponds_to = {correspondence#3}; attribute = explicit_attribute#291; END_INSTANCE;