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Bosch Solar Energy AG is a German wafer and solar cell manufacturer , based in Erfurt , which specialises in silicon - based pholtovoltaic products .
 Bosch Solar Energy, German, Erfurt
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bosch Solar Energy, German, Erfurt