139429
The river 's name is from the Chukchi for " river with rich pastures " , an increasingly ironic derivation considering that the main economic driver in the area is now gold mining which is destroying the reindeer 's pastures .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 None