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
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Classify each country as "African" or "European": Nigeria, Rwanda, Portugal, Romania, Ghana, Ukraine
### Input: 
### Response: Nigeria: African
Rwanda: African
Portugal: European
Romania: European
Ghana: African
Ukraine: European