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There are several hydroelectric dams operating in the basin , among them the second largest operating facility in the world , Itaipu , shared between Paraguay and Brazil on the Paraná River ; the 21st , Ilha Solteira Dam in Brazil , on the Paraná ; the 25th , the Yacyretá Dam shared between Paraguay and Argentina , also on the Paraná ; and the 53rd , the Itumbiara Dam , in Brazil , on the Paranaíba River .
 Itaipu, Paraguay, Brazil, Paraná River, Ilha Solteira Dam, Brazil, Paraná, Yacyretá Dam, Paraguay, Argentina, Paraná, Itumbiara Dam, Brazil, Paranaíba River
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Itaipu, Paraguay, Brazil, Paraná River, Ilha Solteira Dam, Brazil, Paraná, Yacyretá Dam, Paraguay, Argentina, Paraná, Itumbiara Dam, Brazil, Paranaíba River