9351
According to United States Geological Survey maps of the forest , it consists of two large areas or tracts : a northern and southern portion .
 organization: United States Geological Survey
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: United States Geological Survey 
Answer:
 organization: United States Geological Survey