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It was established in 1919 as the successor to the architectural firm of Pitcher and Tachau by William G. Tachau ( b. 1875 ) and Vought .
 Tachau, William G. Tachau
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tachau, William G. Tachau