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She was portrayed by Canadian actress Roberta Weiss from June 29 , 1990 to July 19 , 1991 , and briefly by Marguerite Hickey from July 31 to August 12 , 1991 .
 Canadian, Roberta Weiss, Marguerite Hickey
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Canadian, Roberta Weiss, Marguerite Hickey