15752
Rafael Correa , and his presidential counterparts in Peru , Bolivia , and Colombia , issued a joint letter of protest against this ruling .
 Rafael Correa, Peru, Bolivia, Colombia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rafael Correa, Peru, Bolivia, Colombia