61401
Southwestern Mauritania is predominantly a Wolof-speaking area , but many members of Mauritania 's other ethnic groups have moved to the town to escape the severe problems of desertification further north .
 location: Mauritania; location: Mauritania
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Mauritania, Mauritania 
Answer:
 location: Mauritania; location: Mauritania