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Salamanca , who spoke at a meeting on kidnapping in Colombia , has said in the past that there was ample evidence to prove that Samper 's campaign received millions of dollars in contributions from the country 's top drug lords .
 Samper, Colombia, Salamanca
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Samper, Colombia, Salamanca