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Then-US President Richard Nixon can be heard discussing the show ( specifically the 1971 episodes " Writing the President " and " Judging Books by Covers " ) on one of the infamous Watergate tapes .
 person: Richard Nixon; location: Watergate
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: Richard Nixon; location: Watergate