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Frits Evert Eyken ( 30 June 1893 - 6 June 1978 ) was a Dutch rower who competed in the 1920 Summer Olympics .
 Frits, Eyken
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Frits, Eyken