non_null
INSTANCE non_null#4;
extracted_from = {explicit_attribute#290};
description = "person.name must have a value (other than `indeterminate')";
corresponds_to = {correspondence#3};
attribute = explicit_attribute#290;
END_INSTANCE;
INSTANCE non_null#5;
extracted_from = {explicit_attribute#291};
description = "person.age must have a value (other than `indeterminate')";
corresponds_to = {correspondence#4};
attribute = explicit_attribute#291;
END_INSTANCE;
INSTANCE non_null#6;
extracted_from = {explicit_attribute#292};
description = "person.gender must have a value (other than `indeterminate')";
attribute = explicit_attribute#292;
END_INSTANCE;
INSTANCE non_null#7;
extracted_from = {explicit_attribute#293};
description = "person.name must have a value (other than `indeterminate')";
corresponds_to = {correspondence#3};
attribute = explicit_attribute#293;
END_INSTANCE;
INSTANCE non_null#8;
extracted_from = {explicit_attribute#294};
description = "person.age must have a value (other than `indeterminate')";
corresponds_to = {correspondence#4};
attribute = explicit_attribute#294;
END_INSTANCE;