59574
Examples include pebble transport by rivers , sand drift over desert surfaces , soil blowing over fields , and snow drift over smooth surfaces such as those in the Arctic or Canadian Prairies .
 Arctic, Canadian Prairies
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arctic, Canadian Prairies