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Paz sin fronteras ( ) was the first in a series of benefit concert s that happened on March 16 , 2008 , on the Simón Bolívar Bridge , which borders Colombia and Venezuela , to celebrate the end of the Andean diplomatic crisis a week earlier on the Rio Group summit .
 Colombia, Venezuela, Rio Group
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Colombia, Venezuela, Rio Group