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Wilhelm Gass ( November 28 , 1813 – February 21 , 1889 ) was a German theologian born in Breslau .
 Wilhelm Gass, Breslau
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Wilhelm Gass, Breslau