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Cal Dallas ( born May 10 , 1956 ) is a Canadian politician and current Member of the Legislative Assembly of Alberta representing the constituency of Red Deer-South as a Progressive Conservative .
 Cal Dallas, Canadian, Alberta, Progressive Conservative
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cal Dallas, Canadian, Alberta, Progressive Conservative