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Henry Harvey Vivian ( 20 April 1868 – 30 May 1930 ) was an English trade unionist , Lib – Lab , later Liberal Party politician and campaigner for industrial democracy and co-partnership , especially noted for his work in co-partnership housing .
 Harvey Vivian, Liberal Party
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Harvey Vivian, Liberal Party