224762
4 hour long play was on the history of the Swedish working class movement from 1879 to present ( 1977 ) and the cast of characters included August Palm , Kata Dalström , Hjalmar Branting and Zeth Höglund .
 August Palm, Kata Dalström, Hjalmar Branting, Zeth Höglund
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 August Palm, Kata Dalström, Hjalmar Branting, Zeth Höglund