22021
It was established in 1926 as a union of the Histadrut , and represented the workers class .
 organization: Histadrut
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Histadrut 
Answer:
 organization: Histadrut