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Plot Estranged sisters Isobel and Marion are forced to reunite when their father dies and they must decide how to handle Katherine , their young , alcoholic , mentally unstable stepmother who has been left nothing but the rural home in which they were raised .
 None
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:  
Answer:
 None