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She operated under the names SS Charters Towers and SS San Mateo , and by the time the U.S. Navy acquired her at Cardiff , Wales , for World War I service on 2 October 1918 she was named SS Frederick Luckenbach .
 Cardiff, Wales
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cardiff, Wales