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Alfréd Meissner ( April 10 , 1871 – September 29 , 1950 ) , was a Czechoslovak politician and member of the Social Democratic Party in the First Czechoslovak Republic .
 Czechoslovak, Czechoslovak
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Czechoslovak, Czechoslovak