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The seventeenth European Bioenergetics Conference ( EBEC ) took place in September 2012 at the Albert - Ludwigs - University in Freiburg , Germany , and was hosted by Thorsten Friedrich .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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