27433
Whereas these were both demilitarised , modified fighters , the fastest piston-engined aeroplane in stock ( original , factory-built ) condition was the German Dornier Do 335 Pfeil , with a maximum speed of 474 mph ( 765 km/h ) in level flight .
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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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