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Slowing qualified for the women 's 50 m freestyle , as a 31-year-old , at the 2004 Summer Olympics in Athens , by breaking a Guatemalan record and posting a FINA B-cut of 26.89 from the Central American and Caribbean Championships in Mexico City .
 Athens, Mexico City
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Athens, Mexico City