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Wimbledon bad boy Jeff Tarango caught a break Monday when he advanced after the retirement of German Alex Radulescu due to heat exhaustion .
 Jeff Tarango, Alex Radulescu, Wimbledon, German
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 Jeff Tarango, Alex Radulescu, Wimbledon, German