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The now-famous Michelson–Morley experiment also influenced the affirmation attempts of peer Albert Einstein 's theory of general relativity and special relativity , using similar optical instrumentation .
 Michelson–Morley, Albert Einstein
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Michelson–Morley, Albert Einstein