30638
There were extensive gold mines in Nubia , and one of the first maps known is of a gold mine in this region .
 location: Nubia
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: Nubia 
Answer:
 location: Nubia