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Powell later recorded , " Seizing the hand-brake as we sped towards what seemed imminent collision , Phipps muttered to himself , ' This is just going to be a question of upbringing . ' "
 Powell
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Powell