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In 1977 , Philips then established a laboratory with the mission of creating a digital audio disc. The diameter of Philips 's prototype compact disc was set at , the diagonal of an audio cassette .
 Philips, Philips
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Philips, Philips