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Aside from administrative work and teaching and training many engineers , he also wrote a treatise on the chemical analysis of minerals ( Traité d'analyse des substances minérales , published 1898 ) and pursued research , in 1899 discovering the eponymous uranium ore carnotite .
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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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