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Power was to be supplied by three 180-kW ( 240-hp ) Maybach HS engines mounted internally in the fuselage , which transmitted their power via driveshafts to two propellers mounted tractor-fashion on the interplane struts nearest the fuselage .
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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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