83376
It is isolated , island-like , by those rivers from its neighbour ranges , as both streams have their source on the Chilcotin Plateau in behind the range .
 None
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:  
Answer:
 None