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The 1998 Intersport Grand Prix was a tennis tournament played on outdoor clay courts at the Am Rothenbaum in Hamburg in Germany and was part of Tier II of the 1998 WTA Tour .
 Hamburg, Germany
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Hamburg, Germany