100846
Natural gold tellurides , like calaverite and krennerite ( AuTe2 ) and sylvanite ( AgAuTe4 ) , are minor ores of gold ( and tellurium ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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