### Instruction: Classify the countries based on the continent they belong to - North America or South America with the former as 'north' and the latter as 'south'. United States, Mexico, Canada, Brazil, Columbia, Argentina, Cuba, Jamaica, Chile, Guyana, Peru.
### Response: 'north', 'north', 'north', 'south', 'south', 'south', 'north', 'north', 'south', 'south', 'south'.