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Robert Fripp used two Revox reel-to-reel tape recorders to achieve very long delay times for solo guitar performance .
 person: Robert Fripp; organization: Revox
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Robert Fripp; organization: Revox