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Keep Our Doctors " committees were established throughout the province and a campaign , backed by the Regina Leader-Post was undertaken with warnings that most doctors would leave the province if socialized medicine were introduced .
 organization: Regina Leader-Post
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: Regina Leader-Post 
Answer:
 organization: Regina Leader-Post