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The automatic nature of speech repetition was noted by Carl Wernicke , the late nineteenth century neurologist , who observed that " The primary speech movements , enacted before the development of consciousness , are reflexive and mimicking in nature .. " .
 Carl Wernicke
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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Text: {0} 
Answer:
 Carl Wernicke