Classify each country as "African" or "European": Nigeria, Rwanda, Portugal, Romania, Ghana, Ukraine
Nigeria: African
Rwanda: African
Portugal: European
Romania: European
Ghana: African
Ukraine: European
<s>[QUESTION] Classify each country as "African" or "European": Nigeria, Rwanda, Portugal, Romania, Ghana, Ukraine [CONTEXT]  [ANSWER] Nigeria: African
Rwanda: African
Portugal: European
Romania: European
Ghana: African
Ukraine: European </s>