40001
When playing an audio CD , a motor within the CD player spins the disc to a scanning velocity of 1.2 – 1.4 " m/s ( constant linear velocity , CLV ) - equivalent to approximately 500 " RPM at the inside of the disc , and approximately 200 " RPM at the outside edge .
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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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