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Ulrich Baasch ( born February 23 , 1890 , date of death unknown ) was a German track and field athlete who competed for the Russian Empire in the 1912 Summer Olympics .
 Ulrich Baasch, German, Russian Empire
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ulrich Baasch, German, Russian Empire