28635
Additionally , oil exploitation of the Amazon rainforest has led to the release of billions of gallons of untreated wastes , gas , and crude oil into the environment , contaminating ecosystems and causing detrimental health effects to Amerindian peoples .
 location: Amazon
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: Amazon 
Answer:
 location: Amazon