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Recognized for his ability to make money , Medina Garza was appointed as the head of the Gulf Cartel in Matamoros , Tamaulipas in 1996 , soon after the arrest of the organization 's co-founder Juan García Ábrego .
 Gulf Cartel, Matamoros , Tamaulipas, Juan García Ábrego
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Gulf Cartel, Matamoros , Tamaulipas, Juan García Ábrego