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Brazilian indigenous women of the Mamainde tribe participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. 1500 natives from 49 Brazilian ethnic groups and from another 17 countries are gathering in Cuiaba until November 16 to compete in some 30 athletic disciplines, many of their own. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524599884 )

A Brazilian indigenous man of the Pataxo tribe takes part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. 1500 natives from 49 Brazilian ethnic groups and from another 17 countries are gathering in Cuiaba until November 16 to compete in some 30 athletic disciplines, many of their own. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600157 )

Brazilian indigenous women of the Kariri Xoco tribe pray before the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600107 )

Indians dance during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. Around 1,600 Indians from 48 tribes are celebrating Brazil's indigenous cultures during the 12th edition of the Games of the Indigenous People, which runs until Nov. 16. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Brazilian indigenous men of the Kariri Xoco tribe pray before the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600149 )

A Pataxo Indian takes part in the bow and arrow competition during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. Around 1,600 Indians from 48 tribes are celebrating Brazil's indigenous cultures during the 12th edition of the Games of the Indigenous People, which runs until Nov. 16. (AP Photo/Felipe Dana) ( APTOPIX Brazil Indigenous Games )

EDS NOTE NUDITY - Mamainde Indian women participate in a tug of war competition during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. Around 1,600 Indians from 48 tribes are celebrating Brazil's indigenous cultures during the 12th edition of the Games of the Indigenous People, which runs until Nov. 16. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

A Rikbaktsa Indian watches the bow and arrow competition during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Indians are silhouetted against an early evening sky as the the sun begins to set during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Pataxo Indians sing during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

A man uses a phone to make a picture of those inside a traditional indigenous home during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Brazilian indigenous women of the Kurabakairi tribe participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524599927 )

An Enawene Nawe Indian looks at the camera during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Pataxo Indians gather during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

A Brazilian indigenous man of the Maiorona tribe takes part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600187 )

Bakairi Indians arrive for the tug of war competition during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Xavante Indians jump into the Cuiaba river during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Brazilian indigenous women of the Kaiapo Durutiri tribe participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524599838 )

A Terena Indian takes aim in the bow and arrow competition during the indigenous games in Cuiaba, Brazil, Tuesday, Nov. 12, 2013. (AP Photo/Felipe Dana) ( Brazil Indigenous Games )

Brazilian indigenous women of the Bakairi tribe arrive to participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524599852 )

Brazilian indigenous women of the Enawenen Awe tribe participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600010 )

A Brazilian indigenous man of the Tapicape tribe takes part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600198 )

A Brazilian indigenous man of the Terena tribe takes part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600216 )

Brazilian indigenous women of the Pataxo tribe participate in a tug of war competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524599842 )

A Brazilian indigenous man of the Terena tribe takes part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600214 )

A Brazilian indigenous man of the Terena tribe observes the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600233 )

A Brazilian indigenous man of the Matis tribe waits to take part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600329 )

A Brazilian indigenous man of the Pataxo tribe waits to take part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600317 )

Indigenous men of various tribes wait to take part in the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600305 )

A Brazilian indigenous man of the Rikbaktsa tribe watches the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600422 )

An indigenous man records participants of the bow and arrow competition with his mobile phone during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. 1AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600302 )

A Brazilian indigenous man of the Rikbaktsa tribe watches the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600410 )

A Brazilian indigenous man of teh Enawenen Awe tribe poses during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. 1500 natives from 49 Brazilian ethnic groups and from another 17 countries are gathering in Cuiaba until November 16 to compete in some 30 athletic disciplines, many of their own. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600538 )

Brazilian indigenous men of the Pataxo tribe look up after the bow and arrow competition during the XII International Games of Indigenous Peoples in Cuiaba, Mato Grosso state, Brazil on November 12, 2013. AFP PHOTO / Christophe SIMON/AFP/Getty Images ( 524600668 )