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In addition , they won eleven medals at the FIL World Luge Championships with seven golds ( Men 's doubles : 1989 , 1991 , 1993 , 1995 ; Mixed team : 1991 , 1993 , 1995 ) and four silvers ( Men 's doubles : 1997 , Mixed team : 1989 , 1996 , 1997 ) .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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